Question 118949: many likes to buy two different kinds of strings for the guitar . the slinky costs $3.50 for each set and the slippys cost $4.50 for each set. how many of the slippys did he buy if he spent $41 ona total of $10 sets of strings.
Answer by mayank(15)   (Show Source):
You can put this solution on YOUR website! Let the no. of slinky sets purchased be x and no. of slippy sets purchased be y.
Then,3.5x+4.5y=41
and as total sets is 10, x+y=10
Multiplying eq 2 by 3.5 we get 3.5x+3.5y=35
thus, subtracting eq 2 from 1 we get,
y=6
thus no. of slippy sets is 6.
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