Question

A textbook store sold a combined total of 444 chemistry and biology textbooks in a week. The number of chemistry textbooks sold was three times the number of biology textbooks sold. How many textbooks of each type were sold?

Answer 1

Answer: 333 chemistry books and 111 biology textbooks

Explanation:

444=x+y

x=3y

4y=444

y=111

x=chemistry

y=biology