Question : Vihaan is twice as efficient as Mayur and can finish a piece of work in 14 days less than Mayur. In how many days Mayur can finish this work?
Option 1: 14 days
Option 2: 21 days
Option 3: 28 days
Option 4: 7 days
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Correct Answer: 28 days
Solution : Let the time taken by Mayur to finish the work be $x$ days. Vihaan is twice as efficient as Mayur, he can finish the work = $\frac{x}{2}$ days According to the problem, $\frac{x}{2} = x - 14$ ⇒ $x = 2x - 28$ ⇒ $x = 28$ Hence, the correct answer is 28 days.
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