Question

Four different pumps are filling an aluminum pool, of dimensions 3x3x7 cubic feet. Every hour the amount of the water in the pool doubles. The first pump pumps twice as
fast as the second, and three times as fast as either third or fourth. The pumping begins
on Tuesday at 8:00 a.m. and ends on Wednesday at 2:00 p.m. The attendant is reading
a book called "I love Finite Math" next to the pool, turning pages at the pace of one page
per minute. At what time is pool exactly half-full?
1. Tuesday 8:00 p.m.
2. Wednesday 5:00 a.m.
3. Wednesday 8:00 a.m.
4. Wednesday 1:00 p.m

Answer 1

Answer:

A pump started filling an empty pool with water and continued at a constant rate until the pool was full. At noon the pool was 1/3 full, and hours later it was 3/4 full. What was the total number of hours that it took the pump to fill the pool?

A.

B.

C. 3

D.

E.