Question

For a certain bathtub, it takes the hot water faucet

4

times as long to fill the tub as it does the cold water faucet. Left on together, the two faucets take
4

minutes to fill the tub. How long will it take the hot water faucet to fill the tub by itself

Answer 1

4 min = (4÷x)
x = 4×4
x=16
16 min will take hot water to fill the run by itself

Answer 2

Answer:20 minutes

Explanation:

Cold water ratio: 4/x

Hot water ration: 4/4x

Together Job: 1

`(4)/(x) + (4)/(4x) = 1`

Multiply all by 4x

16 + 4 = 4x

20 = 4x

5 = x

Hot water 4x5=20