Answer:
7200 cents or $72
Explanation:
he makes 10 cents every 5 seconds
in one hour there are 60 minutes
and there are 60 seconds in a minute
so,
in one minute he makes:
60 / 5 = 12
10cents x 12 = 120 cents per minute
and in one hour he makes
120cents x 60 = 7200 cents
= 7200 cents in one hour
= $72 in one hour
hope this helps :)