Question

The train station clock runs too fast and gains 5 minutes every 3 days.

How many minutes and seconds will it have gained at the end of 7 days?

Answer 1

9514 1404 393

Answer:

mm:ss = 11:40

Explanation:

We assume the amount of gain is proportional to the time that passes.

g/7 = 5/3

g = 7(5/3) = 35/3 = 11 2/3 . . . . minutes

The clock will have gained 11 minutes and 40 seconds after 7 days.