Question

A textbook store sold a combined total of 356 of history and psychology textbooks in a week. The number of psychology textbooks sold was 42 less than the number of history textbooks sold. How many textbooks of each type were sold?

Answer 1

Answer:

The no of History textbooks sold was 199 and The no of Psychology textbooks sold was  157.

Step-by-step explanation:

Here a textbook store sold a combined total of 356 of History and Psychology textbooks in a week.

let x no of History book was sold.

So by the problem,

x-42+x=356

⇒2x=398

⇒x=199

So the no of History textbooks sold was 199 and The no of Psychology textbooks sold was  157.