Question

The cost of 4 erasers, 6 pencils, and 7 notebooks is Rs. 265. The cost price of 2 eraser, 3 pencil and 3 notebook is Rs. 125. Find the cost of 2 eraser, 3 pencil and 5 notebook?

1. Rs. 80
2. Rs. 105
3. Rs. 185
4. Rs. 155

Answer 1

Correct Answer - Option 4 : Rs. 155

Given:

CP of (4 eraser + 6 pencil + 7 notebook) = Rs. 265

CP of (2 eraser + 3 pencil + 3 notebook) = Rs. 125

Calculation:

∵ CP of (4 eraser + 6 pencil + 7 notebook) = Rs. 265      ------(1)

CP of (2 eraser + 3 pencil + 3 notebook) = Rs. 125      ------(2)

Multiply (1) with 2 and (2) with 3;

∴ CP of (8 eraser + 12 pencil + 14 notebook) = Rs. 530      ------(3)

CP of (6 eraser + 9 pencil + 9 notebook) = Rs. 375      ------(4)

Subtracting (4) from (3);

CP of (2 eraser + 3 pencil + 5 notebook) = Rs. 155