Question

a textbook store sold a combined total of 460 history and sociology textbooks in a week. the number of history textbooks sold was three times the number of sociology textbooks sold . how many textbooks of each type were sold ?

Answer 1

Let History books be 3x,

and the sociology books be x ,

Then, 3x + x = 460

4 x = 460

Divide both sides by 4

x = 460/4

x = 115 books= (Sociology Books)

3x = 3 x 115 = 345 books ( History Books)