9)Marguerite inherited $45,000 and invested part of it in her retirement account and donated the rest to a local soup kitchen.The amount of the investment was $5000 less than four times the amount of the donation.How much did Marguerite invest in her retirement account and how much did she donate to the soup kitchen?

10)The original price of a computer was $820.00 Edgar bought it on sale for $738.00 What was the percentage discount?