Andrew Prescot bought his car for $63 500 and sold it at a 20% loss. (a) What was his loss? (b) What did he sell the car for?

How do you write a paragraph proof to prove that the corresponding angles shown are congruent

I’m still confused on how to work the percentages

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! )