Question 1017399
Rob has 40 coins, all dimes and quarters, worth $7.60. How many dimes and how many quarters does he have?
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40 dimes is $4.00
Each dime replaced by a quarter adds 15 cents.
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760 - 400 = 360 cents
360/15 = 24 replacements
--> 24 quarters & 16 dimes