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# If 10 persons can dig 8 feet trench in 12 days,then how many days will 8 persons take to dig 6 feet trench?

 A) 10 days B) 10.25 days C) 11 days D) 11.25 days

 D) 11.25 days

According to Man-day-work concept

$$\Large \frac{M_{1} \times D_{1}}{W_{1}} = \frac{M_{2} \times D_{2}}{W_{2}}$$

$$\Large \frac{10 \times 12}{8} = \frac{8 \times D_{2}}{6}$$

$$\Large D_{2} = \frac{10 \times 12 \times 6 }{64}$$

= 11.25 days

Option (D)is correct.

Part of solved CDS Maths(1) questions and answers : Exams >> CDSE >> CDS Maths(1)

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