Question: Sam has 19 dimes and 6 quarters. She buys 4 candy bars for 3 dimes each and 1 lollipop for 1 quarter. How much money, in cents, does she have left? Think carefully first, then make a decision:
The candy bars cost 4 * 3 = 12 dimes. Sam has 19 - 12 = 7 dimes left. Sam has 6 - 1 = 5 quarters left. Sam has 7 * 10 + 5 * 25 = 195 cents left. So the answer is 195.