Question 180466
Trinidad has $2.35 in nickels and dimes. if she has 33 coins in all , find the number of nickels and dimes.
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Quantity Equation: n + d = 33
Value Equaltion..:5n +10d = 235 cents
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Modify:
5n + 5d = 165
5n + 10d = 235
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Subtract 1st from 2nd to solve for "d":
5d = 70
d = 14 (# of dimes)
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Substiute into n+d = 33 to solve for "n":
n + 14 = 33
n = 19 (# of nickels)
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Cheers,
Stan H.