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
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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