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Railways PYQCBT 2 2017

RRB NTPC · Question 17

Akshat is twice as good a typist as Lokesh and together they finish a piece of work in 7 days. In how many days will Lokesh alone finish the work?

  1. 14

  2. 10

  3. 28

  4. 21

Show answer & explanation

Answer: (D) 21

Explanation

If Lokesh does 1 unit a day, Akshat does 2, so together 3. The work = 3 × 7 = 21 units, and Lokesh alone takes 21 days.