SOLUTION: philip has 40 coins in a jar and they are 10 cent, 20 cent or 50 cent pieces/ if their total value is $8.40 and he has one more 50 cent coin that 20 cent coins, how many of each ty

Question 1072899: philip has 40 coins in a jar and they are 10 cent, 20 cent or 50 cent pieces/ if their total value is $8.40 and he has one more 50 cent coin that 20 cent coins, how many of each type does he have?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
x, y, z, the number of 10 cent, 20 cent, 50 cent coins

Sub for z

Subtract first from second equation

----------the 20 cent coin count

You can find the other two coin quantities.
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