SOLUTION: A bag contains 40 coins, all of them either $2 coins or $5 coins. The total value of money in the bag is $155. Find out how many of each kind of coin is in the bag?

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Question 809082: A bag contains 40 coins, all of them either $2 coins or $5 coins. The total value of money in the bag is $155. Find out how many of each kind of coin is in the bag?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
t+f=40,
2t+5f=155
f = 25, t = 15
check
25*5+15*2=155
ok