A textbook store sold a combined total of 392 physics and psychology textbooks in a week. The number of physics textbooks sold w

Question

3 years ago

10

as three times the number of psychology textbooks sold. How many textbooks of each type were sold?

1 answer:

katen-ka-za [31] · Answer 1 · 2022-11-19T03:37:25+03:00

Answer:

Psychology textbooks = 98 and physics textbooks = 294

Step-by-step explanation:

Let there are x psychology textbooks sold.

No of physics textbooks sold = 3x

ATQ,

A textbook store sold a combined total of 392 physics and psychology textbooks in a week.

x + 3x = 392

4x = 392

x = 98

It means there are 98 psychology textbooks sold and 3x = 3(98) = 294 physics textbooks sold.