John is buying a new computer for $550.00. He has a coupon to receive 15% off. How much, in dollars, is his discount?

The wheels of a bicycle have a diameter of 70cm. how many meters will the bicycle travel if each wheel makes 50 revolutions

Aubrey read 29 books and eli read 52 books what number is equal to the number of books aubrey read?

I'm at a bookstore with $\$35$ in my pocket and a $20\%$-off coupon. what is the cost of the most expensive book i can buy with my money and the coupon? (assume that there are books of every possible price in the bookstore. it's a large bookstore! )