A textbook store sold a combined total of 392 biology and math textbooks in a week. The number of biology textbooks sold was three times the number of math textbooks sold. How many textbooks of each type were sold?

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Hi,

find the solution below

let Maths books be X

biology will be 3x

3x+x=392

4x=392

x=98

therefore maths books are 98

biology books will be 98*3=294

Biology books=294

maths books=98

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