Sharon earned 6000 bonus miles for opening a new credit card that has a frequent-flyer program. She earns 250 miles for every $100 she spends. When the total miles reaches 25,000 miles, Sharon will be able to reserve a free round-trip ticket to anywhere in the United States. How many $100-purchases must she make to get the free trip?

She needs to make 76 $100 purchases.

Step-by-step explanation:

Let's represent this with an equation. We know she already has 6000 miles.

6000 +

She earns 250 per 100 spent dollars. Let's represent the amount of $100-purchases with x.

6000 + 250x

Her ultimate goal is to get 25,000 miles.

6000 + 250x = 25000

Now all we have to do is solve!

250x = 19000

x = 19000/250 = 76

She needs to make 76 $100 purchases.

$53.50

step-by-step explanation:

you have to subtract the amount of money chuck earned ($72.50) by the cost of the gas for the mower ($11.25) and the new string for the trimmer he bought ($7.75).

72.50-11.25=61.25

and then subtract $61.25 by the second thing he bought (the new string for the trimmer)

61.25-7.75=53.5

so in total it's $53.50 (53 dollars and 50 cents)