If a number is increased by 20% and the resulting number is again increased by 2

Question

If a number is increased by 20% and the resulting number is again increased by 20%, what per cent is the total increase ?

Options:

A . 44%

B . 40%

C . 41%

D . 48%

Answer: Option A
Answer: (a)
Using Rule 7,
Effective percentage increase
= $(20 + 20 + {20 × 20}/100)%$= 44%

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