SOLUTION: I have 50c coins and 20c coins. In total I have 8 coins with a total value of R3,10. How many coins of each type do I have?

Question 812791: I have 50c coins and 20c coins. In total I have 8 coins with a total value of R3,10. How many coins of each type do I have?
Answer by Edwin McCravy(20056) (Show Source): You can put this solution on YOUR website!
I have 50c coins and 20c coins. In total I have 8 coins with a total value of R3,10. How many coins of each type do I have?

Let x = the number of 50c coins
Then 8-x = the number of 20c coins

.50x + .20(8-x) = 3.10
  50x + 20(8-x) = 310
50x + 160 - 20x = 310
      30x + 160 = 310
            30x = 150
              x = 5

5 50c coins
8-x = 8-5 = 3 20c coins.

Edwin

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