Question

The train satiation clock runs too fast and gains 7 minutes every 2 days. How many minutes and seconds will it have gained at the end of 5 days?

Answer 1

17 minutes 30 seconds

Explanation:

How many minutes and seconds does this clock gain in 1 day (unit rate)? To determine that, divide 7 minutes by 2 days, obtaining (7/2) minutes/day.

After 5 days have passed, the clock will have gained:

5 days 7 min

----------- * ------------- = 35/2 minutes

1 2 days

35/2 minutes = 17 1/2 minutes = 17 minutes 30 seconds