MATH AGAIN?

One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 8 days. How long will it take the two pumps, working together, to empty the pool? The first pump's rate is 1/5 The second pump's rate is 1/8 The combined pumps rate is 13/40 It will take the two pumps days to empty... show more One pump can empty a pool in 5 days, whereas a second pump can empty the pool in 8 days. How long will it take the two pumps, working together, to empty the pool?

The first pump's rate is
1/5


The second pump's rate is
1/8


The combined pumps rate is
13/40


It will take the two pumps
days to empty the pool together. =
10 answers 10