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If 1 is added to the denominator of a fraction it becomes 1/2. If 1 is added to the numerator it becomes 1. The product of numerator and denominator of the fraction is
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- 6
- 10
- 12
- 14
Correct Option: A
Let the numerator = p and denominator = q
∴ Fraction = | and = | = | |||
q | q + 1 | 2 |
⇒ 2p = q + 1 ⇒ p = | |
2 |
= 1 ⇒ p + 1 = q | |
q |
⇒ | + 1 = q | |
2 |
⇒ | = q | |
2 |
⇒ q + 3 = 2q ⇒q = 3
p + 1 = 3 ⇒ p = 2
∴ pq = 2 × 3 = 6