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?
1 answer:
Answer: 333 chemistry books and 111 biology textbooks
Step-by-step explanation:
444=x+y
x=3y
4y=444
y=111
x=chemistry
y=biology
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