Posted by sam on Thursday, October 28, 2010 at 4:45pm.
It's not necessary to change names on this forum. It's obvious that these four questions were posted by one person.
yeah i know i didnt think you would answer all of thes questions. can you help me w/ at least 2 please. i need to know the steps then i can do the other problems
Your last four money questions are the same type
If will do one, then you try the others.
let the number of nickels be x
then the number of quarters is 16-x
5x + 25(16-x) = 220
5x + 400 - 25x = 220
-20x = -180
x = 9
so 9 nickels and 7 quarters
check: 9 nickels and 7 quarters = 16 coins
value: 9x5 = 7x25 = 220
where is the 25 and 5x from?
25 = 25 cents = 1 quarter
5 = 5 cents = 1 nickel
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