Jerry walked a dog from 6:40 a.m. to 7:30 a.m. one day. If he was paid at the rate of $6 per hour, how much did he earn that day?

To determine how much Jerry earned, first, you need to calculate the total time he walked the dog. Jerry began at 6:40 a.m. and ended at 7:30 a.m.

From 6:40 a.m. to 7:00 a.m. is 20 minutes, and then from 7:00 a.m. to 7:30 a.m. is an additional 30 minutes. Therefore, the total time Jerry spent walking the dog is:

20 minutes + 30 minutes = 50 minutes.

Next, to calculate his pay, convert the time worked into hours. Since there are 60 minutes in an hour, 50 minutes is equal to:

50 minutes ÷ 60 minutes per hour = 0.8333 hours (approximately).

Now, multiply the total hours worked by his hourly rate of $6:

0.8333 hours × $6 per hour = $5.00.

This means Jerry earned $5.00 for that day. The calculation shows that understanding how to convert minutes into hours and then applying the rate of pay is crucial in arriving at the correct earnings figure.