SOLUTION: I really need some help on this problem don went to the bakery to buy rolls and bagels for a party the bagels cost 62 cents each and the rolls cost 37 cents each He bought 144

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Question 1069846: I really need some help on this problem
don went to the bakery to buy rolls and bagels for a party the bagels cost 62 cents each and the rolls cost 37 cents each He bought 144 items and spent $69.78 how many bagels did he buy
Answer by ikleyn(52790) About Me  (Show Source):
You can put this solution on YOUR website!
.
Let "x" be the number of rolls bought.

Then the number of bagels is (144-x).

Don spent 37*x cents for the rolls and 62*(144-x) cents for bagels.


The "value" equation is 

37x + 62(144-x) = 6978   cents.


Simplify and solve it for x"

37x + 8928 - 62x = 6978,

-25x = 6878 - 8928  --->  -25x = - 1950  --->  x = %28-1950%29%2F%28-25%29 = 78 bagels.


Now the number of rolls is 144 - 78 = 66.