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Railways PYQCBT 1 2016

RRB NTPC · Question 57

In a factory, 60 workers can stitch 120 m of clothes in 7 days, what length of clothes can be stitched by 70 workers in 5 days? A. 100 m B. 90 m C. 85 m D. 110 m

  1. B

  2. C

  3. D

  4. A

Show answer & explanation

Answer: (D) A

Explanation

60 workers × 7 days = 420 worker-days stitch 120 m, i.e. 2/7 m per worker-day. 70 workers × 5 days = 350 worker-days stitch 350 × 2/7 = 100 m.