RRB NTPC · Question 99
A man starts walking at 6.30 am. and wants to cover a distance of 30 km. His initial speed is 6 kmph and after covering three-fifth distance, he reduces his speed by 2 kmph. At what time will he complete his walk? A. 11.00 am B. 12.30 pm C. 11.30 pm D. 12.00 pm
Show answer & explanation
Answer: (C) B
Explanation
Three-fifths of 30 km is 18 km, covered at 6 km/h in 3 hours. The remaining 12 km at 4 km/h takes another 3 hours. Starting at 6:30 am, 6 hours later he finishes at 12:30 pm.