Direct Variation Word Problem

The number of words Maria typed varied directly with the amount of time she spent typing. If she typed 275 words in 5 minutes, how long would it take her to type 1,100 words?

• 220 minutes

• 20 minutes

• 15 minutes

• 4 minutes 

The gas pressure in a chamber varies directly with the temperature in the chamber. If the pressure in the chamber is 150 atmospheres (atm) when the chamber is at 50 degrees, what is the pressure in the chamber when the temperature of the chamber is 75 degrees?

• 175 atm

• 200 atm

• 225 atm

• 275 atm

The interest received on a savings account varies directly with the amount deposited. Daniel received $55.35 in interest on $1230 he deposited. How much interest would Daniel have received if he had deposited $2000 into his account?

• 44,444.44

• 90.00

• 1,285.35

• 34.04

If 8 oranges cost $ 10.40, how many oranges can be bought for $ 33.80?

• 21

• 23

• 25

• 26

A person’s weekly pay varies directly with the number of hours worked. Shawn’s pay is $123.00 for 20 hours of work. Find the amount of pay for 31 hours of work.

• $3813

• $190.65

• $4.96

• $620

​ ​ (a)  

• 500

• 50

• 12.50

​ (a)  

• $108.96

• $41.52

• $153.86

• $75.67

The Height of a wave in California varies directly with the seconds that pass by.  At 4 seconds, the wave is 6 feet high.  How many seconds will give you a wave that is 10 feet high? 

• y = 2/3x

• 6

• 6.6

• 7

Tags

A.8

Trina's paycheck earnings varies directly as the number of hours she works. If she works 19 hours and earns $187.15, what should she earn if she worked 40 hours? 

• $443.25

• $394

• $472.80

• $512.20

Tags

A.8