quarter = 1/4 x 100 cents = 25 cents = $0.25
dime = 1/10 x 100 cents = 10 cents = $0.10
so
$2.50 = 10 x $0.25
$0.70 = 7 x $0.10
$3.20 total
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10 quarters and 7 dimes =
10 quarters 7 dimes 9 pennies and 27 nickels is: $4.64
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.
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)