A coin bank contains 250 coins, all dimes and quarters. Together the coins total $39.95. How many quarters are in the coin bank? How many dimes are in the coin bank?
I do know i have to use the numbers in an equation, making quarters X and dimes Y. I think I set it up like this...
x+y = 39.25 and
x+y= 250....i think idk :) Help me please <3
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Second equation is right, but for the first one its cost...a quarter is .25 and dime is .10
so would i graph, substitute, or do combination???
Any, but substitution would probably be easiest. You can solve for y in the second equation easy
and plug that into the other