Ask Question
12 June, 21:14

A textbook store sold a combined total of 327 psychology and history textbooks in a week. The number of history textbooks sold was 75 less than the number of psychology textbooks sold. How many textbooks of each type were sold?

+3
Answers (1)
  1. 12 June, 23:32
    0
    201 psychology textbooks

    126 history textbooks

    Step-by-step explanation:

    We let the number of psychology books be p, and

    number of history books be h

    Thus we can write 2 equations as:

    1. p + h = 327

    2. p - 75 = h

    Now, we put equaiton 2 into equation 1 and solve for p first:

    p + h = 327

    p + (p-75) = 327

    2p = 327 + 75

    2p = 402

    p = 402/2 = 201

    So, 201 psychology textbooks. Now, we know p - 75 = h, hence

    201 - 75 = h

    h = 126

    So, 126 history textbooks
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A textbook store sold a combined total of 327 psychology and history textbooks in a week. The number of history textbooks sold was 75 less ...” in 📙 Mathematics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers