Steve had $2.50 in dimes in the pocket of his jacket. After walking for a half hour, he discovered he had a small hole in his pocket. Two dimes dropped through that small hole every 5 minutes. How much money did Steve have then?

Answer 1

well he started with 2.50 / 0.10 = 25 dimes
half hour is 30 min
30 / 5 = 6 dime drops which is 12 dimes so he had
25 - 12 = 13 dimes left
which is
13 * 0.10 = 1.30