Yanni has $0.85. His mother gave him $0.40 in addition. While going to the mall, Yanni found $0.50. He bought a toy that cost $1.6. How much money in cents did Yanni have left? Think carefully first, then make a decision:
Yanni's mother gave him $0.40 in addition to $0.85 for a total of $0.40 + $0.85 = $1.25. Yanni found $0.50 so he had a total of $1.25 + $0.50 = $1.75. Therefore, Yanni had $1.75 - $1.6 = $0.15 left. 100 cents make $1 so $0.15 is 100 * 0.15 = 15 cents. So, the answer is 15.