Direct and Inverse Proportion Word

If 5 workers take 16 days to complete an order, how many days would it take 10 people?

If it takes 3 people, 20 hours to dig a hole, how many hours will it take 5 people?

If 3 people can paint a fence in 6 days, how many days would it take 2 people?

If 8 boxes contain 480 pins, how many pins will there be in 3 boxes?

Determine the type of variation:

• Direct

• Inverse

• Neither

Tags

TEKS.MATH.8.5E

• direct variation
• inverse variation
• joint variation
• none of these

Write a direct proportion equation.

• R=3/4t

• R=4/3t

At a restaurant jars of tomato sauce are stored in boxes in the pantry. Each box contains 8 jars of tomato sauce. A cook uses 2 jars from 1 of the boxes. Write the function that shows the relationship between y, the total number of jars of tomato sauce remaining in the pantry, and x, the number of boxes in the pantry.

Mathematical Equivalence

ON

If 3 minibuses can carry 42 passengers, how many passengers can 2 minibuses can carry?

If 4 cooks can prepare a buffet in 15 minutes, how many minutes would it take 6 cooks?