Solve the problem and explain how estimation could be used to make sure the answer is reasonable. olivia bought some bananas for $3.55 and some ice cream for $3.25. about how much change did olivia get from $10.00? a. olivia got $3.20 in change. estimation: 3.55 + 3.25 is about 7. $10 – $7 = $3 olivia got about $3 in change. b. olivia got $3.50 in change. estimation: 3.55 + 3.25 is about 7. $7 ÷ 2 = $3.50 olivia got about $3.50 in change. c. olivia got $16.80 in change. estimation: 3.55 + 3.25 is about 7. $10 + $7 = $17 olivia got about $17 in change.