Question

you use a metal detector on the beach.You find 2 quarters,12 dimes,and 23 pennies.Write an equation you can use to find how many more pennies p you need to find in order to have a total of $2.00

Answer 1

2.00 = 0.25(2) +0.10(12) +0.01(23 +p)

Explanation:

The number of pennies needed will be the number required to make up the difference between $2.00 and the change already found.

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Let p represent the number of pennies needed. Together with the change already found, we want the total to be $2.00.

2.00 = 0.25(2) +0.10(12) +0.01(23 +p) . . . . . equation for p

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7 pennies need to be found