SOLUTION: I have 20 coins. All of them are either one pound or 50 pence coins. They are worth �11.00. How many pound coins and 50 pence coins do I have. (Algebra)

Question 883706: I have 20 coins. All of them are either one pound or 50 pence coins. They are worth �11.00. How many pound coins and 50 pence coins do I have. (Algebra)
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
I have 20 coins. All of them are either one pound or 50 pence coins. They are worth �11.00. How many pound coins and 50 pence coins do I have. (Algebra)
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Thx for telling us it's Algebra, we might not have known that.
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p = pound coins
f = 1/2 pound coins
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p + f = 20
p + f/2 = 11
--------------------- Subtract
f/2 = 9
f = 18 50p coins
p = 2
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