10 quarters = 250 cents (25 x 10)
7 dimes = 70 cents (7 x 10)
250 + 70 = 320
10 quarters and 7 dimes equal 320 cents. In other words, $3.20 or 3 dollars and twenty cents.
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10 quarters and 7 dimes =
4 quarters=10 dimes x quarters=85 dimes quarter=10/4 dimes x (10/4 dimes) = 85 dimes x= 85 dimes/(10/4 dimes) x=34 Answer: 34 quarters
He has 18 quarters (for $4.50)...........and 10 dimes ($1.00)
85 dimes = 85*10 cents = 85*10/25 quarters = 34 quarters.
You can take 4 quarters, 9 dimes, 1 nickel, and 3 pennies