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A boy on being asked what 6/7 of a certain fraction was, made the mistake of dividing the fraction by 6/7 and so got an answer which exceeded the correct answer by 13/70. Find the fraction–
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2 3 -
3 5
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4 5 -
7 9
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Correct Option: B
Let the fraction = P
According to the question ;
| of p = | − | |||
| 7 | 6/7 | 70 |
| ⇒ | = | - | |||
| 7 | 6 | 10 |
| ⇒ | − | = | |||
| 6 | 7 | 70 |
| ⇒ | = | ||
| 42 | 70 |
| ⇒ | = | ||
| 42 | 70 |
| ∴ p = | = | ||
| 70 × 13 | 5 |
