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Question

Among 4 people A, B, C and D, A takes thrice as much as B to complete a piece of work. B takes thrice as much time as C and C takes thrice as much time asD to complete the same work. One group of three of the 4 men can complete the work in 13 days while another group of three can do so in 31 days. Which is the group that takes 13 days?
  1. A,B,C
  2. A, B, D
  3. B,C,D
  4. A,C,D


Solution

The correct option is B A, B, D
Option A is the correct answer. Check the video for the approach.

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