Question
A laptop’s price increases by 7% annually. If its present
price is ₹50,000, what will be the price after 2 years?Solution
ATQ,
If there is successive increase of ‘a%’ and ‘b%’ on a certain quantity/value, then the net percentage increase = a% + b% + [(a × b)/100]%
So, the net percentage increase = 7% + 7% + [(7 × 7)/100]%
= 14% + (49/100)% = 14% + 0.49% = 14.49%
So, the price of the laptop after 2 years = 1.1449 × 50000 = ₹57,245
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