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Aleonysh [2.5K]
3 years ago
9

A textbook store sold a combined total of 426 math and sociology textbooks in a week. The number of math textbooks sold was 88 m

ore than the number of sociology textbooks sold. How many textbooks of each type were sold?
Mathematics
1 answer:
SOVA2 [1]3 years ago
8 0
Let m and s be the number of math and sociology books sold respectively.

m=s+88 we are also told that:

m+s=426, using m found above in this equation gives you:

s+88+s=426 combine like terms on left side

2s+88=426  subtract 88 from both sides

2s=338  divide both sides by 2

s=169, since m=s+88

m=169+88=257

So 257 math and 169 sociology textbooks were sold.
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