# 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. =

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. =

Follow

10 answers
10

Are you sure you want to delete this answer?