Question

A textbook store sold a combined total of 266  psychology and chemistry textbooks in a week. The number of chemistry textbooks sold was 48 less than the number of psychology textbooks sold. How many textbooks of each type were sold?

Answer 1

Answer:

Given that:

A textbook store sold a combined total of 266  psychology and chemistry textbooks in a week. The number of chemistry textbooks sold was 48 less than the number of psychology textbooks sold.

Let number of psychology textbooks sold =p

number of chemistry textbooks sold =c

As a textbook store sold combined total of 266 psychology and chemistry textbooks in a week

Therefore

It is given that number of chemistry textbooks sold was 48 less than then psychology textbooks sold

put (ii) equation values in (i)

put value of c in (ii)

Number of chemistry textbooks sold = 157

Number of physics textbooks sold =109