Madhya Pradesh Police Exam Model Paper 2

Question : 56 of 100

Marks: +1, -0

The price of a commodity increases first by 20% and then by 10%. What is the net increase in the price?

Solution:

GIVEN:
The price of a commodity increases first by 20% and then by 10%
FORMULA USED:
Net increase%

= X + Y + XY{/}100

CALCULATION:
Net increase%

= X + Y + XY{/}100

⇒ X = 20% & Y = 10%
⇒ Net increase %

= 20 + 10 + 20 × 10{/}100

⇒ 30 + 2

⇒ 32%

∴ Net increase in price = 32%

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