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?
1 answer:
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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