Charlie has agreed to mow his neighbor’s lawn each week and will baby-sit some hours. If he makes $100 or more each week, his parents will charge him rent. How many hours should Charlie agree to baby-sit each week to avoid paying rent?
hard to say, since we don't know how much he makes per hour of sitting.
anyway, we want
hours*rate < 100
To figure out how many hours Charlie should agree to baby-sit each week to avoid paying rent, we need to know how much money Charlie makes for each hour of baby-sitting.
Let's assume Charlie charges $x per hour of baby-sitting.
If Charlie only mows the lawn, he will make $100 each week, and his parents will charge him rent.
To avoid paying rent, Charlie needs to make less than $100 each week. So we can set up the following inequality:
x * hours < $100
We can solve this inequality to find the maximum number of hours Charlie should agree to baby-sit:
hours < $100 / x
Therefore, Charlie should agree to baby-sit less than $100 / x hours each week to avoid paying rent.