SOLUTION: Vincent has 43¢ in dimes and pennies. He has 7 coins altogether. How many coins of each kind does he have?

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Question 863179: Vincent has 43¢ in dimes and pennies. He has 7 coins altogether. How many coins of each kind does he have?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
d dimes
p pennies

d%2Bp=7 and 0.10d%2B0.01p=0.43;
10d%2Bp=43

10d%2Bp-%28d%2Bp%29=43-7
9d=36
highlight%28d=4%29
-->--> highlight%28p=3%29