Turtle and vicent combine their coins to find they have all dimes and quarters .they have 8 more quarters them dimes and the coins are worth a total of 5.15 .how many dimes and quarters do they have?

If they set aside the 8 extra quarters, the remaining coins will be pairs consisting of one quarter and one dime--each pair worth $0.35. The value of those pairs is $5.15 -2.00 = $3.15, so there must be $3.15/$0.35 = 9 of them.

There are 9 dimes and 17 quarters.

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