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In an Examination, a Student was Asked to Find 3/14 of a Certain Number. By Mistake, He Found 3/4 of that Number. His Answer was 150 More than the Correct Answer. Find the Number Given to Him?

Computer MCQs Series for PPSC, FPSC – Most Repeated MCQs | Set 4

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Explanation

• In an examination, a student was asked to find 3/14 of a certain number.
• By mistake, he found 3/4 of that number.
• His answer was 150 more than the correct answer. The number can be find out as:

Let suppose the number was “y”. So 3/4 of y means “3y/4” and 150 would be subtracted from “3y/4” to get it equal to “3y/14”.

3y/4 – 150 = 3y/14

Through this equation, we can easily figure out the number.

Number = ?

Solution

Let suppose

Number = y

Now according to the given condition

3y/4 – 150 = 3y/14

3y/4 – 3y/14 = 150

21y – 6y = 4200

15y  = 4200

Conclusion

In an examination, a student was asked to find 3/14 of a certain number. By mistake, he found 3/4 of that number. His answer was 150 more than the correct answer. The number was 280.

Computer MCQs Series for PPSC, FPSC – Most Repeated MCQs | Set 6

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