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?
Yanni's mother gave him $0.40 in addition to $0.85 for a total of $0.40+$0.85 = $
<gadget id="calculator">0.40+0.85</gadget>
<output>1.25</output>
1.25.
Yanni found $0.50 so he had a total of $1.25 + $0.50 = $
<gadget id="calculator">1.25+0.5</gadget>
<output>1.75</output>
1.75.
Therefore, Yanni had $1.75 - $1.6 = $
<gadget id="calculator">1.75-1.6</gadget>
<output>0.15</output>
0.15 left
100 cents make $1 so $0.15 is 100*0.15 = 
<gadget id="calculator">100*0.15</gadget>
<output>15</output>
15 cents.

<result>15</result>