Question

One hour on earth is four hours on planet S.

If 240 hours on planet S have passed how many hours has it been on earth?

Answer 1

The answer is 60 hours.

Explanation:

We could use proportions to solve.

`(1 \: hour \: on \: earth)/(4hours \: on \: planet \: s) = (x)/(240hours \: on \: planet \: s)`

`4 * x = 4x \\ 1 * 240 = 240`

`(4x)/(4) = (240)/(4) \\ x = 60`