SOLUTION: A shopkeeper orders a number of sunglasses for which he pays $300. As they are being unpacked, 10 get broken. By selling each sunglass at $4 more than he paid for it, he manage to

Question 1062294: A shopkeeper orders a number of sunglasses for which he pays $300. As they are being unpacked, 10 get broken. By selling each sunglass at $4 more than he paid for it, he manage to get a profit of $100. How many glasses did he originally order?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
x, original quantity of sunglasses
x-10, how many actually shopkeeper did sell
p, original price for 1 sunglasses pair
, original price, again

Revenue:
Cost: 300
PROFIT:

Make the substitution for original price because that is based on the original x sunglass pairs.

The easier part is now to just solve this equation.
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