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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.
To Find
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
y = 280 answer
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.