Railways PYQCBT 2 2017

RRB NTPC · Question 9

Girish can paint a picture in 4 days when he works for 8 hours per day. Due to illness, he could work for only 6 hours per day and was required to finish painting 7 such pictures. How many days would Girish take to finish the work?

  1. 28

  2. \(37\frac{1}{3}\)

  3. \(39\frac{2}{5}\)

  4. 32

Show answer & explanation

Answer: (B) \(37\frac{1}{3}\)

Explanation

One picture needs 4 × 8 = 32 hours, so 7 pictures need 224 hours. At 6 hours a day: 224/6 = 37 1/3 days.