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If 5 people undertook a piece of construction work and finished half the job in 15 days. If two people drop out, then the job will be compl…

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If 5 people undertook a piece of construction work and finished half the job in 15 days. If two people drop out, then the job will be completed in
  • A10 days
  • B15 days
  • C20 days
  • D25 days
Correct answer: D

Discussion 1

0
CCommunity
25 days

That is, half the work done = 5 × 15 × ½

Then, 5 × 15 × ½ = 3 × ? ×1/2

i.e. 5 × 15 = 3 × ?

therefore, ? (No. days required) = 5 × 15/3 = 25 days.