Fungai steps into the supermarket to buy a candle. A candle costs 29 cents. She has a $2 note, and the shopkeeper has 5 cent and 6 cent coins only in his till. If Fungai is to get her change in these denominations,
what is the largest product she can obtain after multiplying the number of 5 cent coins by the number of 6 cent coins in her change?
The solution starts with the equation 6x + 5y = 171. Where did they get 171

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171 +29 = 200

6/100 = .06 cents
5/100 = .05 cents
200/100 = $2.00

.06x + .05y = 1.71 times 100 to vacate the decimal points

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