SOLUTION: Robert has 50 coins, all 5 cent and 10 cents pieces, amounting to $3.50. By using an equation, find how many of each coin he has.

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Question 899379: Robert has 50 coins, all 5 cent and 10 cents pieces, amounting to $3.50. By using an equation, find how many of each coin he has.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

Let x represent the amount of the larger coin, the Dime

CENTS makes Sense

10x + 5(50-x) = 350 cents 

    5x = 100

     x = 20, number of Dimes. 30 Nickels 50-20

And...

200 + 150 = 350 0r $3.50