Joshua mows Lawns on the weekend to make extra money. Two weeks ago he mowed a neighbor's lawn for 1/2 hour and earned $10. Last week he mowed his uncle's lawn for 3/2 hour and earned $30. This week he mowed the lawn at the community center for 2 hours and earned $30. Which job paid the best? Explain your reasoning.

Uncle's lawn paid the best (see explanation)

Step-by-step explanation:

The earning rate for the various lawns was ...

neighbor: $10 / (1/2 h) = $20/h uncle: $30 / (3/2 h) = $20/h community center: $30 / (2 h) = $15/h

In this context, "paid the best" can be interpreted different ways. On the one hand, it can mean "paid the most per hour of work". No single job "paid the best" according to that meaning, as both the neighbor and the uncle paid at the rate of $20 per hour.

It can also mean "paid the most". No single job "paid the most", as both the uncle and the community center paid $30 for the work done.

We might say the uncle's job paid the best, because it both paid at the highest rate per hour and paid the most money.