number of 5 c coins --- x
number of 20 c coins ---- y
x + y = 30
5x + 20y = 345
or x + 4y = 69
subtract: 3y = 39
y = 13
then x = 17
state your conclusion.
I have 30 coins consisting of 5c coins and 20c coins. The total value of the coins is $3.45. How many of each kind do I have?
some hellp please!
2 answers
Well, the answer is 17 however it is still possible to be a different answer depending on the question
1 answer