Proportions
Solve for x:
2/4 = x/16
x = 8
A board game debuted at a cost of $59. After three months, the price was reduced to $36. What was the percent change in the price of the game?
39% decrease
Mary ran 2 miles in 23 minutes. If she continued at the same pace, how long will it take her to run 10 miles?
(Set up the proportion and solve!)
2/23 = 10/x
x = 115 minutes
Find the volume of a cylinder with a diameter of 12 cm and a height of 20 cm.
V=bh
A=(3.14)(r^2)
2260.8 cm cubed
Solve for x:
20/30 = x/15
Lukas sold 50 of the 86 video games in his collection. What was the percent change in the number of games in his collection after making the sale?
58.1% decrease
A 2-month membership to the gym costs $125. Jim would like to be a member for 8 months. What is the total amount he will pay for 8 months?
(Set up the proportion and solve!)
2/125 = 8/x
x = $500
Find the area of a circle with a radius of 7 inches.
A=(3.14)(r^2)
153.86 inches squared
Solve for x:
x/2.5 = 18/5
x = 9
Troy works at a tech store and makes $12 an hour. If his hourly pay was increased to $13.75 an hour, what was the percent change?
14.6% increase
Bobby drove 110 miles, and his car used up 5 gallons of gas. How many miles can he drive with 16 gallons of gas?
(Set up proportion and solve!)
110/5 = x/16
352 miles
Find the height of a cylinder with a volume of 600 ft cubed and base with 80 ft squared.
V=bh
A=(3.14)(r^2)
7.5 ft
12/19 = 11/x
x = 17.417
Ethan has a job mowing lawns in the summer. His is dedicated to putting 40% of his income back into his business account. Last week, he put $30 into his business account. How much money did he make last week?
$75
Carter has to read a 278 page book for ELA class. He can read 6 pages in 18 minutes. At this rate, how long will it take him to finish the book?
6/18 = x/278
92.67 minutes
Find 25% of the volume of a cylinder with a radius of 2 meters and a height of 18 meters. Round to the nearest whole number.
V=bh
A=(3.14)(r^2)
57 meters cubed
Solve for x:
8/9.7 = 8.1/x
x = 9.82125
Alberto makes $21 an hour at his current job. His boss said next week he will start making $24. What is the percent increase in Alberto's pay?
14.286%
Amy earned $25 after babysitting for 3 hours. If she always charges the same rate, how much will she make after working for 7 hours?
25/3 = x/7
$58.33
Find the area of a semicircle with a diameter of 10 inches. Round to the nearest whole number.
A=(3.14)(r^2)
39 inches squared