Questions on Algebra: Percentage and Pie Charts answered by real tutors!

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Question 1163334: A new car cost $1 20000. After one year, its value decreases by 20%. For the second year, its value decreases by further 10%. What is the value of the car after two years?

Click here to see answer by Theo(13342)

Question 1164440: The fox population in a certain region has a relative growth rate of 9 percent per year. It is estimated that the population in the year 2000 was 29,900 foxes.
a) Find an equation that models the population t years after 2000 ( t=0 for 2000).
A =
b) Use the equation from part (a) to estimate the fox population in the year 2010. Round to the nearest fox.
= _____ foxes
Click here to see answer by Boreal(15235)

Question 1164661: 1) At what chicago local time is the chicago-frankfurt flight due to arrive in frankfurt.
Departure Arrival City Time zone
Chicago 7:05pm* 2:45pm Chicago ST -6
Frankfurt ST +1
Caracas ST -4
Auckland ST 11
Adelaide ST 8.5
Moscow ST 3
*Previous Day ST: Summer Time
2). If it is 11:45am in Adelaide, what time is it in Moscow?
3) If it is 11:20am in Caracas whattime is it in Auckland?
Click here to see answer by ikleyn(53763)

Question 1165001: In a certain state, the first $2500 of SMith's income is not taxed; on the next $5000 of income, the tax is 2%; on all income over $7500, the tax is 5%. If Smith pays a tax of $365, find his income.
Click here to see answer by Theo(13342)

Question 1165259: if 40% of x is 8, what is x % of 40? the answer is 10 But I am not sure why. Is their a formula
8/x =40/100
Click here to see answer by josgarithmetic(39799)

Question 1165367: directions; describe each of the following changes in two ways; as an absolute change in terms of percentage points and as a relative change in terms of a percentage
question; the percentage of republicans in the house of representatives from 40.9% in 2010 to 55.3% in 2016
Click here to see answer by Boreal(15235)

Question 1165470: directions: Answer question involving conversions within the USCS system
one cubic foot holds 7.48 gallons of water and 1 gallon of water weighs 8.33 pounds. How much does 6 cubic feet of water weigh in pounds? in tons?
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Question 1165469: directions: answer questions involving conversions within the USCS system
The Kentucky Derby distance is 10 furlongs. How far is the Kentucky Derby in (a) miles? (b) yards?

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Question 1166106: A shirt costs �55 but is in a sale with 30% off.
How much is the shirt in the sale?

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Question 1166638: When a number is decreased by 53%, the result is 30. What is the original number to the nearest tenth

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Question 1168456: Tristan and two of his friends purchased tickets to a school play. Tristan paid
for all the tickets with a $50.00 bill and received $23.00 in change. If Tristan
used a coupon for 25% off, what was the original price for one ticket?
A. $6.75
B. $9.00
C. $12.00
D. $27.00
Click here to see answer by solver91311(24713)

Question 1168798: Ben left a 20 percent tip in the resuant the bill was 40 cauclete the tip

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Question 1170143: Mr. Johanson reports that 7 of his students were absent from class yesterday. Ms. Riccardo reports that 7 of her students were absent from class yesterday. Ms. Riccardo has a higher percentage of students absent. Which teacher has more students in their class? Explain.

Click here to see answer by Boreal(15235)

Question 1170122: If an annual recycling cost are 7,000. Annual sales amount out to 1,185,857 what percent of cells does recycling cost represent
Click here to see answer by Theo(13342)

Question 1170465: The population of a country has been increasing for several decades. In 1990, the population was about 259 million people. In 2014, the population was about 303 million people. Determine the percent increase in the country's population during this time period.
Click here to see answer by josgarithmetic(39799)

Question 1170554: 5. The rice consumption in a certain city was 80 000 tonnes in 1995. By 2000, the rice consumption had increased by 24%. If the consumption of rice in the city continues to increase at the same rate, i.e., 24% every 5 years, find the consumption of rice in the city in 2005.
Click here to see answer by ikleyn(53763)

Question 1170994: The cost to a distributor for a product is $41. The distributor sells the product for $93 to his customers. What is the markup rate? Be sure to round your answer to the nearest whole percent, e.g. 0.435 would be 44%.The rate is the %.
Click here to see answer by Theo(13342)

Question 1171271: Mr. McClory reports that 6% of his students were absent from his period 5 class yesterday. Ms. Kessell reports that 6% of her students were absent from her period 5 class yesterday.
The attendance secretary wants to know which teacher had more students absent. What do you say?

Click here to see answer by ikleyn(53763)

Question 1171272: Kohl's changed it's company policy for applying two coupons to a single purchase. The new policy is to take the percent off first and the dollar amount off last. If you hand the cashier a $10 off coupon and a 30% off coupon, how much will you get charged for a $500 Air Pods?
Click here to see answer by Theo(13342)

Question 1171589: A student answers 80% of the questions on a math exam correctly. If he answers 40 questions correctly, how many questions are on the exam?

Click here to see answer by ikleyn(53763)

Question 1171650: The height of adult males in Japan is approximately normally
distributive with mean 68.5 inches and standard deviation of 1.7 inches.
What percent of Japanese adult males have a height greater than 72
inches?
Click here to see answer by Boreal(15235)

Question 1171649: The height of adult males in Japan is approximately normally
distributive with mean 68.5 inches and standard deviation of 1.7 inches.
What percent of Japanese adult males have a height less than 65
inches
Click here to see answer by Boreal(15235)

Question 1171759: Successive discounts of 30% are followed by 45% equal to what single discount?
a) 60%
b) 90%
c) Cannot be determined
d) 75%
e) 539/2000%
Click here to see answer by Solver92311(821)

Question 1171647: The height of adult males in Japan is approximately normally
distributive with mean 68.5 inches and standard deviation of 1.7 inches.
(These numbers are fictious.)
(a) What percent of Japanese adult males have a height between 68
inches and 69.2 inches?

Click here to see answer by Boreal(15235)

Question 1171860: n exam had 56 questions worth a total of 100 points (40 questions worth 1 point and then 16 questions worth various points- ie, 3 points, 5 points, etc.). The sum of the questions totalled 100 points. The exam is worth 70% of my mark, but i need to get 51% on the exam. How many questions do I need to get correct to get 51% on this exam? Thank you
(I think I got a total of about 70 questions correct. most of the 1 point questions and a couple points from each of the other 16 questions).
Thank you
Click here to see answer by Solver92311(821)

Question 1172053: A basketball player guesses her team will score 57 points during the game. The player's team actually scores 63 points.
What is the percent error in the player's guess?
Round your answer to the nearest tenth of a percent.

Click here to see answer by ikleyn(53763)

Question 1171648: The height of adult males in Japan is approximately normally
distributive with mean 68.5 inches and standard deviation of 1.7 inches.
What percent of Japanese adult males have a height between 65
inches and 67 inches?

Click here to see answer by Edwin McCravy(20081)

Question 1172461: Tina has completed 120 problems in a workbook. She used another 14 weeks to work out the remaining problems. She completed the same number of problems in each of the 14 weeks.IF she managed to complete 30% of the remaining problems in a book within 6 out of 14weeks, how many problems did she complete in each week out of 14 weeks?
Click here to see answer by ikleyn(53763)

Question 1172522: At first the number of Mac's marbles was 80% of Jack's marbles. After Mac had given 48 of his marbles to Jack, the number of his marbles left was half as many as Jack's marbles. How many marbles did Mac have at first?
Click here to see answer by josgarithmetic(39799)

Question 1172568: Kisha saved 12.00 when buying a coat. the coat was on sale for 30% off. what was the original price of the coat

Click here to see answer by Alan3354(69443)

Question 1172785: I have this problem in my textbook and I have been struggling to find a way to solve it, although it had been solved already on this website but I don't understand how the answer provider was able to solve it. Anyways here's the problem.

In a certain mathematics class, the part of the class that are members of the math club is 50% of
the rest of that class. The total number of math club members in this class is what percent of the
entire class?

Thanks :)
Click here to see answer by Theo(13342)

Question 1172980: A merchant is selling a new line of watches. He prices the watches at $120 and runs a 10% off sale. During the sale, he made a profit of 20% on the watches . How much did the merchant pay for each watch ?
Click here to see answer by greenestamps(13334)

Question 1173243: Adrian saved $4800 last month, which was 60% of his monthly income. Find the monthly income.
Click here to see answer by ikleyn(53763)

Question 1173257: Duncan, Michelle and their father want to buy a new television. Duncan and Michelle will pay 25% and 15% of the price respectively. Their father will pay the rest. If their father pay $2760, find the amount that Michelle is going to pay.
Click here to see answer by ikleyn(53763)

Question 1173349: In a race, there are 7000 participants and the female participants are 25% less than the male participants. Find the difference between the number of male participants and the number of female participants.
Click here to see answer by ewatrrr(24785)

Question 1173482: If 20 is increased to 22, the increase is what percent of the original number? (This is known as the percent change.) Round your answer to two decimal places.
Click here to see answer by ikleyn(53763)

Question 1173571: please check my Math !
US Sales of hybrid cars for the first quarter of 2012 totaled 106,206 units . This is a 23 percent increase on the figure of units sold for the same period in 2011. Find the number of units sold in 2011 . Round to the nearest units .
23/100 = 0.23
2.23/106206 = 2.165= 216
106206-216= 105990
Click here to see answer by ikleyn(53763)

Question 1173620: PLEASE Check my Work !
Among the countries , Nigeria had the highest population growth of 62.4% . Nigeria's pollution is 97,552 thousands in 1990 . Find the population of Nigeria in 2010 .Round to the nearest thousands .
62.4/100 = 0.624 =1.624
1.624x = 97,552
x = 97,552 / 1.624
x = 60,068.96
x= 60,069 nearest thousands

Click here to see answer by ewatrrr(24785)

Question 1173954: There was a traffic jam caused by a traffic accident. In a period of time, the length of the traffic jam increased by 25% to 4km. Find the increase in length of the traffic jam during that period.
Click here to see answer by Theo(13342)

Question 1174071: Alice Hall made a $3,000 down payment on a new Ford Explorer wagon. She still owes 90% of the selling price. What was the selling price of the wagon?
Click here to see answer by ikleyn(53763)

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