calvinhb03 calvinhb03

24-10-2021
Mathematics

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a textbook store sold a combined total of 348 history and chemistry text in week.The number of history textbooks sold was three times the number of chemistry books were sold. how many book of each type were sold.

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PowerfulTree PowerfulTree

24-10-2021

Answer:

x=87, y=261

Step-by-step explanation:

x+y=348 and 3x=y

plug 3x in for y.

x+(3x)=348

4x=348

x=87

plug x in to solve for y.

3(87)=y

y=261

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