# Questions on Word Problems: Problems on percentages, ratios, and fractions answered by real tutors!

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 Question 473210: find the slope, if it exists, of the line containing the pair of points: (5,4) and (9,-10) = Click here to see answer by Alan3354(34679)

 Question 473211: solve by the elimination method: 2r-3s= -14 3r+2s=18 Click here to see answer by jim_thompson5910(29613)
 Question 473211: solve by the elimination method: 2r-3s= -14 3r+2s=18 Click here to see answer by Alan3354(34679)

 Question 473105: hope you can help as im,and everyone else ive asked are stumped. i have 400mls of a 9percent solution, i need to concentrate it so im left with a solution that contains 27percent of the active ingredient, the amount in mls that i am left with out of the 400ml is not important as long as its a 27percent solution. the best i have come up with is concentrating it down from 400mls to 100mls is this anywhere near right? a solution that is a little bit stronger isnt a problem really hope you can help as im going round in circles. thanks for your time. Click here to see answer by scott8148(6628)

 Question 473594: Profits in the second quarter for a local retailer were 112% of that in the first quarter. Profits in the third quarter were 87% of the first quarter. the profit fot the the three quaters combined exceeded \$255,000. what were the profits for each quarter. Click here to see answer by rfer(13569)

 Question 473623: Junior ate 30% of the sandwiches at the picnic. If he ate 1 ½ sandwiches, how many sandwiches were there ? Click here to see answer by rfer(13569)

 Question 474097: Experience shows that a ski lodge will be full (199 guests) if there is a heavy snow fall in December, while only partially full (96 guests) with a light snow fall. What is the expected number of guests if the probability for a heavy snow fall is .40? Click here to see answer by edjones(7794)

 Question 474212: if the ratio of girls to boys in secondary school is 95%, what does this mean? Click here to see answer by stanbon(60778)

 Question 474247: When 20 % of a number is added to the number, the result is 222. what is the number? Click here to see answer by solver91311(18785)

 Question 474825: If the ratio of male students to female students in a class is 4:3, which of the following CANNOT be the number of students in the class? A) 14 b) 21 C) 28 D) 30 E) 35 Please explain and show me how I can approach and solve this problem, thanks! Click here to see answer by Edwin McCravy(9719)

 Question 475145: This question read: Without knowing sales tax, find tax on \$1500, if tax on \$350 is \$28. Use proportion to explain. Give real life example of a ratio and a rate. Then explain the difference of each. Why is one a rate and the other a ratio? Describe steps involved to solve the problem Click here to see answer by Theo(3556)

 Question 475100: Sarah bought a shirt that was 2/5 off the regular price. Which decimal number does the fraction represent? Click here to see answer by rfer(13569)

 Question 475252: on a math test, 12 students earnedan A . This number is exactly 25%of the total number of students in theclass . how many student are in the class? Click here to see answer by robertb(4012)
 Question 475252: on a math test, 12 students earnedan A . This number is exactly 25%of the total number of students in theclass . how many student are in the class? Click here to see answer by stanbon(60778)

 Question 474823: The measures of the three angles in a triangle are in the ratio 1:1:2. Which of the following MUST be true? I. The triangle is isosceles. II. The triangle is equilateral. III. The triangle is a right angle. A) None B) I only C) II only D) I and II only E) I and III only Please explain and show me how I could approach and solve this problem, thanks! Click here to see answer by richard1234(5390)

 Question 475411: 2/5 of the students are boys. there are 12 girls. how many students in all? Click here to see answer by Tatiana_Stebko(1410)

 Question 475931: To make green paint, a painter mixes yellow paint and blue paint in the ratio of three to two. If he used 24 gallons of yellow paint, how much blue paint did he use? Click here to see answer by stanbon(60778)

 Question 475948: 450 milliliters of a 5% solution is heated until all but 200 mL has evaporated. What percent of the remaining mixture is salt? Click here to see answer by jorel1380(2518)

 Question 475949: A soccer team has 16 wins and 13 losses. What is the least number of games which the team must win in a row in order for its winning percentage to be above 60%? Click here to see answer by jorel1380(2518)

 Question 475944: A crew consists of 1 apprentice, 1 journeyman, and 1 master carpenter. The crew receives a check for \$5100 for a job they finished. A journeyman makes 300% of what an apprentice makes and a master carpenter makes make 150% of what a journeyman makes. How much does each person on the crew earn? Click here to see answer by josmiceli(10616)

 Question 476160: The cost, in millions of dollars, to remove x % of pollution in a lake modeled by C=6000/200-2x. So what is the cost to remove 75% of the pollutant? Click here to see answer by josmiceli(10616)

 Question 476182: Your supervisor instruct you to purchase 240 pens and 6 staples for the nurse's station . Pens are purchased in sets of 6 \$2.35 per pack . Staplers are sold in sets of 2 for 12.95 . How much will purchasing these products cost? Click here to see answer by jorel1380(2518)

 Question 476613: A 3 ounce bottle of vanilla extract costs \$0.96 and 9 ounce bottle costs \$2.52. What is the difference to the nearest cent between the cost per ounce of the extract in the 3 ounce bottle and the cost per ounce of the extract in the 9 ounce bottle? Click here to see answer by josmiceli(10616)

 Question 476651: The total salary of two people is \$110,000. One person is paid \$45,000 and the other, \$65,000. How much more, percentage wise, does the \$65,000 person is getting paid over the \$45,000? Click here to see answer by josmiceli(10616)

 Question 477230: another question...2 percent of 50 students scored a 96% on an exam. What was the exact number of students that scored the 2%? i multiplied 0.02 y 50 and got the answer 1... is that correct? thanks so much! Click here to see answer by jim_thompson5910(29613)

 Question 477313: three neighborhood dogs barked consistently last night. spot, patches, and lady began with a simultaneous bark at 11 pm. then spot barked every 4 minutes, patches every 3 minutes and lady every 5 minutes. why did mr. jones suddenly awake at midnight? Click here to see answer by jorel1380(2518)

 Question 477415: There is a living room suit for \$999.99 and I get 20% off. After taking discount I must pay 7% sales tax, what is the total cost for the living room suit with discount and tax? Click here to see answer by josmiceli(10616)

 Question 477809: Two-fifth of the students in a mixed school are boys.If there are thirty girls in the school, how many are boys? Click here to see answer by ewatrrr(11176)

 Question 478427: I am lost on this one-USA Today, in a December 2004 article titled “There's no place like work for the holidays,” presented the results of a study of 600 full-time U.S. workers done by Penn Schoen & Berland Associates. Results revealed that 33% of the respondents were taking no time off during the holidays. Of those surveyed, 28% reported taking 1 to 2 days off during the holidays. • a. What is the population? • b. What is the sample Click here to see answer by robertb(4012)

 Question 478829: If I sold a t-shirt for 24\$ what would be total including sales tax of 6% Click here to see answer by rfer(13569)

 Question 478873: A contractor estimates that he can paint a house in 5 days by using 6 men. if he actully uses only 5 men for the job,how many days will they take to paint the house? Click here to see answer by ankor@dixie-net.com(16527)

 Question 479296: you are working on a point system you have a total of 830 points and you have to reach a goal of 1530 points what is your average at this time Click here to see answer by stanbon(60778)

 Question 479299: What is the equation used to calculate the following: Total monthly bills are \$6,300.00. Person A makes 61% more than person B, therefore they will pay 61% more of the total monthly bills. Solve: How much will each person pay per month? Thank you! Click here to see answer by solver91311(18785)

 Question 479469: The ratio of two positive numbers is 6 to 5. If the difference between the two numbers is 8, what are the numbers? Click here to see answer by jorel1380(2518)
 Question 479469: The ratio of two positive numbers is 6 to 5. If the difference between the two numbers is 8, what are the numbers? Click here to see answer by stanbon(60778)

 Question 479683: If a number is increased by 30% of itself and the result is 26. What is the number? Click here to see answer by mananth(13127)

 Question 479749: hi there i am stuck on a homework question about ratio's becasue it has a fraction.... the question is...Write the ratio of lenght to width if a picture frame has length of 10 1/2 and a width and 8 3/4 Click here to see answer by Tatiana_Stebko(1410)
 Question 479749: hi there i am stuck on a homework question about ratio's becasue it has a fraction.... the question is...Write the ratio of lenght to width if a picture frame has length of 10 1/2 and a width and 8 3/4 Click here to see answer by stanbon(60778)

 Question 479968: The number of bacteria in a quarter teaspoon of potato salad left in the sun on the picnic table is given by N(T)= 35T^2 - 10T +10000, 1 less than (<) or equal to T less than (<) or equal to 20 where T is the ambient air temperature. When the food is placed on the table at noon, the increase in air temperature as a function of time can be modeled by the equation T (t) = 3t +10, 0 less than (<) or equal to t less than or equal to3, where t is the time in hours. 1. Find the composite function N(T(t)) 2.In a well structured sentecnce(s), interpret the composition 3. How many bacteria are in the quater teaspoon of potato salad after it has set in the sun for two hours? Click here to see answer by stanbon(60778)

 Question 479969: Find the half-live, in hours, of radioactive iodine (^131I)if, after 20 days, only 0.53 kg of the initial 3 kg remains. Click here to see answer by stanbon(60778)

 Question 480294: how do you calculate 6% per anum on \$1800.00 for 1 year Click here to see answer by Alan3354(34679)

 Question 480382: The sales price of a car is \$12,590, which is 20% off the original price. What is the original price? Click here to see answer by Tatiana_Stebko(1410)

 Question 480929: A lake is stocked with 500 fish, and the fish population P increases according to the following model P=10,000/1+19e^-t/5, t greater or equal than 0, where t in the time in months. After how many months will the population reach 2000? Click here to see answer by stanbon(60778)