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

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.
Answer by MathTherapy(10555) (Show Source): 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

Correct answer:
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