Question

a pool is in shape of a rectangular prism. on monday water was pumped out of the pool at a constant rate starting at 12:00 pm to 12:15 pm the water in pool was 45 inches deep. at 12:35 pm the water in the pool was 41 inches deep by how many inches does the depth of the water decrease each minute ?

Answer 1

From 12:15 to 12:35, 20 minutes have passed. 4 inches of water have drained in this 20 minutes.

4 inches in 20 minutes equals 1/5 inch per minute.

1/5 inch is the amount of decrease per minute.