djeromew92 djeromew92

13-11-2019
Mathematics

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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?

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bobisboss1212 bobisboss1212

13-11-2019

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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