Question

At a closing down sale, a book store was selling 3 books and 5 notebooks for Rs 309 or 6 books and 2 notebooks for Rs 282. How much would one book and 1 notebook cost?

• A. 33
• B. 57
• C. 75
• D. 42

Answer 1

The correct option is C

75

3 x + 5 y = 309, 6x + 2 y = 282

Multiplying the first equation by (-2) and adding to the second equation, we get

-6x - 10y = - 618

6x + 2y = 282

-8y = -336

y = 42

6x + 2 (42) = 282

one book and 1 notebook cost 33 + 42 = 75