A Rs 1000 box of cookies is offered at 10% discount and a Rs 400 bar of chocolate at 8% discount. If we buy 2 boxes of cookies and 3 bars of chocolate, what is the effective discount we get (in %)?
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 9.25
Cost of 2 box of cookies and 3 bars of chocolate = 2 × 1000 + 3 × 400 = Rs 3200
SP of 2 box of cookies and 3 bars of chocolate = 2 × 1000 × 90/100 + 3 × 400 × 92/100 = 1800 + 1104 = Rs 2904
Effective discount % = 3200 - 2904/3200 × 100 = 9.25%