Question 814708: A textbook store sold a combined total of 258 chemistry and sociology textbooks in a week. The number of sociology textbooks sold was 60 less than the number of chemistry textbooks sold. How many textbooks of each type were sold?
Answer by TimothyLamb(4379)   (Show Source):
You can put this solution on YOUR website! c + s = 258
s = c - 60
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c + s = 258
c + c - 60 = 258
2c - 60 = 258
2c = 318
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c = 159
s = 99
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