Question

An aquarium can holds 5 gallons of water. Desiderio Fills

at a rate of 40 fluid ounces per minute. How long does it take to fill?

Answer 1

160 minutes or 2 hours, 40 minutes

Explanation:

1 gallon = 128 oz

5 gallons = 640 oz

create a proportion:

let 'x' = time in minutes to fill tank

40 oz/ 1 min = 640 / x

cross-multiply:

40x = 640

x = 160 minutes