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Railways PYQCBT 2 2017

RRB NTPC · Question 85

Amrit is twice as good a painter as Kushal and together they finish a piece of work in 6 days. In how many days will Kushal alone finish the work?

  1. 10

  2. 12

  3. 24

  4. 18

Show answer & explanation

Answer: (D) 18

Explanation

If Kushal does 1 unit a day, Amrit does 2, so together they do 3. The work = 3 × 6 = 18 units, and Kushal alone takes 18 days.