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andrew-mc [135]
2 years ago
10

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

as three times the number of psychology textbooks sold. How many textbooks of each type were sold?
Mathematics
1 answer:
katen-ka-za [31]2 years ago
5 0

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.

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