A student multiplied a number by 8/5 instead of 5/8. What is the percentage error in the calculation?

Let the required number = (LCM of denominator 5 and 8) = 40 According to the question, Wrong answer = 8/5 times; 40 = 64 Correct answer = 5/8 times; 40 = 25 Required percentage of error = [(64 - 25)/25]times; 100 = 156%

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- In a village election between two candidates, the winner secured 65% of the total votes cast and won by a majority of 9000 votes. How many votes did the losing candidate get?
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- A candidate who gets 22% marks fails by 10 marks but another candidate who gets 40% marks gets 14% more than the passing marks. Find the maximum marks.
- Rahul saves Rs. 6800 more if he spends 70% of his income instead of 90%. Find the savings of Sumit whose income is 25% more than that of Rahul, and spends 85% of his income.

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