Set up a proportion to solve each problem, show all work, and label all answers.
Problem 1 :
The ratio of boys is 3 to 2. If there are 12 boys, how many girls are there?
Problem 2 :
It takes one Super Giant Pizza to feed 3 people. If you invite 36 people, how many pizzas will you need?
Problem 3 :
At a recent party, it cost $9.50 for refreshments for 10 guests. At this rate, how much would it cost to have refreshments for 80 guests?
Problem 4 :
Mary has saved $17.50 in the past 3 weeks. At this rate, how much will she save in 15 weeks?
Problem 5 :
Mr. Johnson was paid $190 for a job that required 40 hours of work. At this rate, how much should he be paid for a job requiring 60 hours of work?
Problem 6 :
The park ranger stocks the children's fishing pond keeping a ratio of 4 sunfish to 3 perch. If he puts 300 sunfish into the pond, how many perch should be put into the pond?
Problem 7 :
If two pounds of meat will serve 5 people, how many pounds will be needed to serve 13 people?
Problem 8 :
Jack was planting a tree. He was to dig a hole that was 3 feet deep for every 5 feet of tree height. How deep should he dig the hole for a tree that is 17 feet high?
Problem 9 :
A certain shade of green paint is made from 5 parts yellow mixed with three parts blue. If 2 cans of yellow are used, how many cans of blue should be used?
Problem 10 :
If a 4-pound roast takes 150 minutes to cook, how long should a five-pound roast take?
1) there are 8 girls.
2) we will need 12 super giant pizzas to feed 36 people.
3) it would cost $76 to have refreshments for 80 guests.
4) she will have saved $87.50.
5) he should be paid $285 for 60 hours of work.
6) There should be 225 perch put in the pond.
7) 5.2 pounds will be needed to serve 13 people.
8) the hole should be 10.2 feet deep.
9) 1.2 cans of blue should be used.
10) 5-pound roast should take approximately 187.5 minutes to cook.
Problem 11 :
If a jogger runs 2 miles and burns 185 calories, how many calories would he burn jogging 3 miles?
Problem 12 :
The ratio of the cost of a tennis racket to tennis balls is 18 : 1. If a can of balls cost $5.35, what is the cost of the racket?
Problem 13 :
Curtis School has 1,575 students. The student to teacher ratio is 15 to 1. How many teachers are at Curtis School?
Problem 14 :
A recipe calls for 2 1/2 cups of flour to make 2 dozen cookies. How many cups of flour would be required to bake 15 dozen cookies?
Problem 15 :
A meteorologist reports that the ratio of snowfall in January to total snowfall during the average winter is 2 to 5. If 34 inches have fallen in January of the current year, find the predicted total snowfall for the entire winter.
Problem 16 :
Because of slumping sales, a small company had to lay off some of its employees. The ratio of total employees to employees laid off is 5 to 1. Find the total number of employees if 22 are laid off.
Problem 17 :
A crew of loggers cleared 1/2 acre of lumber in 4 days. How long will it take the same crew to clear 2 3/4 acres of lumber?
Problem 18 :
A person who weighs 200 pounds on earth would weigh about 32 pounds on the moon. Find the weight of a person on Earth who would weigh 15 pounds of the moon.
Problem 19 :
A pump can fill a 750-gallon tank in 35 minutes. How long will it take to fill a 1000-gallon tank with this same pump?
Problem 20 :
In a public opinion poll, 624 people from a sample of 1,100 indicated they would vote for a specific candidate. How many votes can the candidate expect to receive from a population of 40,000?
11) The jogger will burn 277.5 calories when jogging 3 miles.
12) The cost of the tennis racket is $96.30.
13) There are 105 teachers at Curtis school.
14) 18.75 cups are required to bake 15 dozen of cookies.
15) the predicted snowfall for the winter is 85 inches.
16) the total number of employee is 110.
17) it take 22 days for the same crew to clear 2 3/4 acres of lumber.
18) So, the weight of a person on the earth is 93.75 lb.
19) So, it will take 46 minutes and 40 seconds to fill the larger tank.
20) The candidate can expect about 22,691 votes from a population of 40,000.
May 21, 24 08:51 PM
May 21, 24 08:51 AM
May 20, 24 10:45 PM