Sam is stocking up on canned tuna. He got 9 cans at the supermarket, and had 5 coupons for 25 cents off a single can per coupon. He paid $20 and got $5.50 in change. How many cents does a can of tuna cost?
His total without the coupons was $20 - $5.50 = $
<gadget id="calculator">20-5.5</gadget>
<output>14.5</output>
14.50.
He had 5 coupons that each saved him 25 cents, so the full price of all the tuna is $14.50 + 5*$0.25 =$15.75.
He bought 9 cans of tuna, so each can costs $15.75 / 9 = $
<gadget id="calculator">15.75/9</gadget>
<output>1.75</output>
1.75.
As 1 dollar has 100 cents 1.75 * 100 = 
<gadget id="calculator">1.75*100</gadget>
<output>175</output>
175 cents.

<result>175</result>