Question

A student mows lawns on the weekends. It takes him 110 minutes to mow 2 lawns. What prediction can you make about the time he will spend this weekend if he has 12 lawns to mow?

It will take him 10 hours to mow 12 lawns.
It will take him 11 hours to mow 12 lawns.
It will take him 17 hours to mow 12 lawns.
It will take him 48 hours to mow 12 lawns.

Answer 1

It will take him 11 hours to mow 12 lawns

Explanation:

110/2=55 (meaning it takes him 55 minutes to mow 1 lawn)

55x12=660 (meaning it takes him 660 minutes to mow 12 lawns)

660/60=11 (meaning it takes him 11 hours to mow 12 lawns)

Why 660/60? Because there is 60 minutes in 1 hour.