Question

Mr. Tempo bought some story books at $5.00 each at a bookshop. Twelve of the books got missing, he then sold the rest at $7.00 and made a profit of $150.

Write out all necessary equations of this scenario to ascertain how many books Mr. Tempo baught

Answer 1

Mr. Tempo bought 117 books.

Explanation:

Since Mr. Tempo bought some story books at $ 5.00 each at a bookshop. Twelve of the books got missing, he then sold the rest at $ 7.00 and made a profit of $ 150, to determine how many books he bought the following calculations must be performed:

((X - 12) x 2) - 12x5 = 150

(X -12) / 2 = 150 + 60

X - 12 = 210/2

X = 105 + 12

X = 117

117 x 5 = 585

105 x 7 = 735

735 - 585 = 150

Therefore, Mr. Tempo bought 117 books.