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Q: Direction : (8-11) A, B and C can independently complete a piece of work in 20 days, 40 days and 60 days repectively. A worked alone for two days, then was joined by B. After another two days, C replaced A while B and C continued until the work was completed. After completion the contractor paid `142,80. 8 man together can complete a work in 40 days. If 2 more men are added, than in how many days will the work be completed?
  • A. 30 days/30 दिन
  • B. 32 days/32 दिन
  • C. 36 days/36 दिन
  • D. +25 days/25 दिन
Correct Answer: Option B - M₁ एवं M₂ = आदमी, D₁ एवं D₂ दिन M₁ D₁ = M₂ D₂ 8×40 = 10 ×D₂ D₂ = 32 दिन
B. M₁ एवं M₂ = आदमी, D₁ एवं D₂ दिन M₁ D₁ = M₂ D₂ 8×40 = 10 ×D₂ D₂ = 32 दिन

Explanations:

M₁ एवं M₂ = आदमी, D₁ एवं D₂ दिन M₁ D₁ = M₂ D₂ 8×40 = 10 ×D₂ D₂ = 32 दिन