SOLUTION: Roly found 75 coins consisting 10-centavo and 25 centavo coins in his fathers pocket. He counted them and the total value is P15.00. How many coins are there in each of the denomin

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Question 1124457: Roly found 75 coins consisting 10-centavo and 25 centavo coins in his fathers pocket. He counted them and the total value is P15.00. How many coins are there in each of the denominator?
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
system%28x%2By=75%2C10x%2B25y=1500%29

system%28x%2By=75%2C2x%2B5y=300%29

2%2875-y%29%2B5y=300
150-2y%2B5y=300
3y=150
y=50
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thereforex=25
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25 of 10-centavo coins
50 of 25-centavo coins