1 packet of biscuit costs Rs16 but the pack of 4 of the same packet of biscuits costs Rs 56. What is the effective discount (in %) on the pack?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 12.5
Cost of 1 pack = Rs 16
Cost of 4 packs = Rs 64
Set of 4 packs = 56
Effective discount = [(64 - 56)/64] × 100
= (8/64) × 100
= 12.5%