Question

Left on together, the cold and hot water faucets of a certain bathtub take 4 minutes to fill the tub. If it takes the hot water faucet minutes to fill the tub by itself, how long will it take the cold water faucet to fill the tub on its own?

Do not do any rounding.

Answer 1

`Cold = (1)/(6)\ mins`

Explanation:

The correct given parameters are:

`Both = (1)/(4)\ mins`

`Hot = (1)/(12)\ mins`

Required

Time taken by the cold water faucet

We have:

`Cold + Hot = Both`

Make Cold the subject

`Cold = Both -Hot`

So, we have:

`Cold = (1)/(4)-(1)/(12)`

Take LCM

`Cold = (3-1)/(12)`

`Cold = (2)/(12)`

Divide by 2

`Cold = (1)/(6)`