tonebeeze wrote:

The water level in a rectangular swimming pool measuring 60 feet by 25 feet is to be lowered by 6 inches. How many gallons of water must be removed? (1 cu ft = 7.5 gallons)

A. 100

B. 250

C. 750

D. 1200

E. 5625

I believe the question is not properly written.

there is no info given about the measures of inches to feet

since I live in US, i know about it..but people from EU definitely have no idea about the conversion from inches to ft.

12 inch = 1ft

suppose the pool is 1ft deep. then we have 60x25x1 = 1500 cu ft.

now..we need to lower 6 inches, which means we have 0.5 ft.

60x25x0.5 = 30x25 = 750 cu ft.

so we need to take out 750 cu ft.

750 cu ft * 7.5 = 75^2.

since we have 5 in the end, only E works.

E