Tutors Answer Your Questions about Mixture Word Problems (FREE)
Question 148868: I need an algebraic expression or formula for solving the following.
" A stamp collection consists of 3, 8, and 15 cent stamps. The number of 8 cent stamps is one less than triple the number of 3 cent stamps. The number of 15 cent stamps is six less than the number of 8 cent stamps. The total value of all the stamps is $2.47. Find the number of 8 cent stamps in the collection".
I was able to solve this using a chart displaying the multiples of 3, 8 and 15 side by side and calculating the sum of the different factors, of course starting by estimating the multiple of 3 first.
Click here to see answer by mangopeeler07(462)  |
Question 149155: Brenda made 46 and 59 on her first two Biology tests and has one test remaining. The average on the three tests must be at least 65 for Brenda to pass the course. Write an inequality to represent this situation using s for the score on the last test.
Click here to see answer by mangopeeler07(462) |
Question 149167: Let p, q, and r be the following statements:
p: Roses are red
q: The sky is blue
r: The grass is green
Translate the following statements into English
(a) p q (b) p (q r) (c) q (p r) (d) ( r q) p
Click here to see answer by stanbon(75887) |
Question 149352: a bottle contains 750 ml of fruit punch with a concentration of 50% pure fruit juice. Jill drinks 100 ml of the punch and then refills the bottle with an equal amount of a cheaper brand of punch. If the concentration of juice in the bottle is now reduced to 48%, what was the concentration in the punch that jill added?
and the answer is 35% but how did they got the answer?
Click here to see answer by nerdybill(7384)  |
Question 149489: A lottery has one $2000. prize, two $1000. prizes, and ten $500. prizes. Two thousand tickets are sold at $5.00 each. find the expectation if a person buys two tickets. Four choices are -$.50, -$1.00, -$2.00, -$.25
How do I even go about wotking this?
Ellen
Click here to see answer by stanbon(75887) |
Question 149674: thnax for helping me th e last time i inquire;
solution m is 10% sugar while solution a is 30% sugar. a technician wants to have 60 liters mixture of solution m and a with 18% sugar. how many liters of each solution should be used.?
Click here to see answer by nerdybill(7384) |
Question 150329: Mr. Phillips bought 7 drums of two different cleaning fluids for his dry cleaning business. One of the fluids cost $30 a drum and the other was $20 a drum. The total price of the supplies was $160. How much of each fluid did Mr. Phillips buy? Write a system of equations and solve by graphing.
Click here to see answer by mangopeeler07(462) |
Question 150420: This is a multiple choice proble that I am not getting any of the answers to.
The average amount customers at a certain grocery store spend yearly is $636.55. Assume the variable is normally distributed. If the standard deviation is $89.46, find the probability that a randomly selected customer spends between $550.67 and $836.94.
0.144 = 14.4%
0.820 = 82.0%
0.156 = 15.6%
0.943 = 94.3%
Please help,
Ellen
Click here to see answer by scott8148(6628)  |
Question 150427: Can someone help me please?
9. (6 pts) A couple plan to have exactly three children. (Need line segments? Use these)
(You may also hand draw your work and scan it in and save it in your .doc file,
as a .jpg or .pdf. Your choice.)
(a) Construct a tree diagram and list the sample space.
(b) Find the probability that the family has at least two girls.
Click here to see answer by stanbon(75887) |
Question 150459: Can someone help me please?
A jar contains 5 yellow marbles, 16 green marbles, and 8 black marbles. If one marble is selected at random, what is the probability that it is not green? (Give solution as a fraction in lowest terms.)
Click here to see answer by nerdybill(7384) |
Question 150463: how do you do this problem?
During the last hour, a telemarketer dialed 20 numbers and reached 4 busy signals, 3 answering machines, and 13 people. Use this information to determine the empirical probability that the next call will be answered in person. (Give solution as a fraction in lowest terms.)
Click here to see answer by checkley77(12844) |
Question 150462: I need help please?
13. (4 pts) At an annual flower show, 6 different entries are to be arranged in a row.
a) How many different arrangements of the entries are possible?
b) If the owners of the 1st, 2nd, and 3rd place entries will be awarded prizes of $100, $50, and $25 respectively, how many ways can the prizes be awarded?
Click here to see answer by stanbon(75887) |
Question 150460: I need some help understanding this please.
A license plate is to consist of two letters followed by three digits. How many different license plates are possible if the first letter must be a vowel, and repetition of letters is not permitted, but repetition of digits is permitted?
Click here to see answer by stanbon(75887) |
Question 150331: Paul's Plumbing charges $35 for any service call plus an additional $40 an hour for labor. A service call from Robert's Rapid Repair Plumbing costs $45 plus and additional $40 and hour for labor. When is the total price for a service the same for both companies? when is it better to use Paul's Plumbing? explain your answer in terms of slopes and y-intercepts.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 150486: Can I please get some help?
One card is selected at random from a standard 52-card deck of playing cards. Find the probability that the card selected is a red king. (Give solution as a fraction in lowest terms.)
Click here to see answer by stanbon(75887) |
Question 150505: a grocer mixes 12kg of one grade of beans with 10kg of another grade to obtain a blend worth 540 pesos. he then makes a second blend worth 610 pesos by mixing 8kg of the first grade with 15kg of the second grade. find the price per kilogram of each grade?
Click here to see answer by stanbon(75887) |
Question 150506: an airplane made a 2040-kilometer trip in the direction of the wind in 5 hours last tuesday. if the trip against the direction of the wind took an hour longer, find the rate of the plane in still air and the velocity of the wind.
Click here to see answer by stanbon(75887) |
Question 150508: there were 3/4 as many women as there were men in a train yesterday. at the next station, 12 women and 6 men got in. as a result, there were 6/7 as many women as men on the train. how many men and women were in the train at first?
Click here to see answer by nerdybill(7384) |
Question 150521: a researcher orders a broth 40.2% glucose for her lab. However, she needs a stronger broth, one that is 50.1% glucose. She has 16.1 liters of 57% glucose broth in the stock room. How much 50.1% glucose broth can she make?
Click here to see answer by josmiceli(19441)  |
Question 150592: I'm really having diffuculties trying to understand this question.
11. (3 pts) The results of a survey for an airline are shown below
Traveler Male Female Total
Business 57 92 149
Vacation 72 74 146
Total 129 166 295
Use the chart to find the probability that the traveler was
a) male
b) on vacation given the traveler was male
c) female given the traveler was on business
(Give solutions as fractions in lowest terms.)
can someone please help me?
Click here to see answer by Edwin McCravy(20055)  |
Question 150573: How would you put this in expected value and fair price of ticket?
1000 tickets for prizes are sold for $2 each. Seven prizes will be awarded – one for $400, one for $200, and five for $50. Steven purchases one of the tickets. (Give solutions as decimals accurate to the nearest hundredth.)
a) Find the expected value
b) Find the fair price of the ticket.
Click here to see answer by Edwin McCravy(20055) |
Question 150704: Can someone help me to understand this problem?
A specific brand of bike comes in two frames, for males or females. Each frame comes in a choice of two colors, red and blue, and with a choice of three seats, soft, medium, and hard.
a) Use the counting principle to determine the number of different arrangements of bicycles that are possible.
b) Construct a tree diagram illustrating all the different arrangements of bicycles that are possible.
c) List the sample space.
Click here to see answer by Fombitz(32388)  |
Question 150710: a mixture of food a and b is to be made so that it contains at least 45 oz of nutrient N2. the cost per pound of a is $4 and each pound of A contains 1 oz of N1 and 2 oz of N2. Food b cost $8 per pound and each pound contains 1.5 oz of N1 and 0.5 of N2. if the weight of the mixture must not exceed 40lb, how many pound of each should be used so that the total cost is a minimum?
Click here to see answer by ankor@dixie-net.com(22740) |
Question 150836: can i please get help?
Select five random numbers between 30 and 100. Calculate the mean, median, mode, and midrange of these numbers. Based on your calculations, which measure of central tendency best represents these numbers?
Click here to see answer by Fombitz(32388) |
Question 150850: Solve This Problem Interactively Customize This Problem
A mixture containing 6% salt is to be mixed with 2 ounces of a mixture which is 15% salt, in order to obtain a solution which is 12% salt. How much of the first solution must be used?
Click here to see answer by Fombitz(32388) |
Question 150851: Sulfuric acid (H2SO4) can be used to remove water from organic materials leaving behind a residue of black carbon. If beaker A contains a 15% solution of sulfuric acid and beaker B contains a 20% solution of sulfuric acid, how much from each beaker should be used to make 6 liters of a 18% solution of sulfuric acid?
Click here to see answer by Fombitz(32388) |
Question 150851: Sulfuric acid (H2SO4) can be used to remove water from organic materials leaving behind a residue of black carbon. If beaker A contains a 15% solution of sulfuric acid and beaker B contains a 20% solution of sulfuric acid, how much from each beaker should be used to make 6 liters of a 18% solution of sulfuric acid?
Click here to see answer by josmiceli(19441) |
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