SOLUTION: mark has 7 more dimes than nickels. the value of his dimes is 10 cents more than 3 times the value of his nickels. how many of each coin does mark have
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Question 1063554: mark has 7 more dimes than nickels. the value of his dimes is 10 cents more than 3 times the value of his nickels. how many of each coin does mark have Found 2 solutions by Boreal, MathTherapy:Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! nickels=x
dimes = x+7
.10(x+7)=3(.05x), the value equation
solve
.10x+.70=.15x, now subtract .10x from both sides.
.05x=.70, multiply both sides by 100 and 5x=70
x=14 nickels and x+7 =21 dimes ANSWER
That would be 70 cents for nickels and $2.10 for dimes, which checks.
You can put this solution on YOUR website!
mark has 7 more dimes than nickels. the value of his dimes is 10 cents more than 3 times the value of his nickels. how many of each coin does mark have
