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The charges per hour of internet surfing is increased by 25...

This question belongs to Arithmetic Ability Time And Work
Time and Work
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The charges per hour of internet surfing is increased by 25% then find the percentage decrease in the time period of surfing user (a net savy) who can afford only 10% increase in expenditure:

Answer & Solution
Correct Answer: Option B
Time × Rate = total charges
100 × 100 = 10000
X × 125 = 110 [25% increase in rate, user can afford only 10% increase]
X = $$\frac{{110}}{{125}} \times 100$$   = 88%
Thus, decrease in time = 12%
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