Aswimming pool holds 480,000 liters of water. the pool has two drainage pipes. when the pool is completely full, the first pipe alone can empty it in 160 minutes, and the second pipe alone can empty it in 240 minutes. when both pipes are draining together, how long does it take them to empty the pool?

1d

2b

3 false

4 d

5 3200sq,ft

80+60+y=180

then divide the difference between 60 and y and add it to 180

so x =180 +( (y-60)/2)

x equals 200

step-by-step explanation:

8

multiplication is multiplication.   it might feel harder depending on what level of math you are in, but generally it will be the same old stuff, while implementing some new concepts and methods of solving work.