Question

The amount of time t(in minutes) that it takes to put out a fire varies inversely with G, the volume of water used (in hundreds of gallons). When Gis 3, tis 15. Find how long it takes to put out a fire when 500 gallons of water (G = 5) are used.

A. 15 minutes
B. 9 minutes
C. 25 minutes
D. 1 minutes​

Answer 1

9 minutes

Explanation:

The amount of time t that it takes to put out a fire varies inversely with the volume of water used, G

t = k/G

Where,

k = constant

When G is 3, t is 15

t = k/G

15 = k/3

Cross product

15 * 3 = k

k = 45

Find t when G = 5

t = k/G

t = 45/5

t = 9 minutes