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If increasing 60 by p% gives the same result as decreasing 80 by p%, then  what is the p% of 91?
1. 43
2. 23
3. 13
4. 33

1 Answer

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Correct Answer - Option 3 : 13

Calculation:

⇒ 60 × (1 + p%) = 80 × (1 - p%)

⇒ 60 × ((100 + p)/100) = 80 × ((100 - p)/100)

⇒ p% = 1/7

⇒ Now, p% of 91 = 91 × (1/7) = 13

∴ The required result will be 13.

Percentage = a% = a/100 

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