Disha drives a car at an average speed of 48 km/h and reach her destination in 6 hours. Himanshu covers that distance in 4 hours. If Disha increases her average speed by 8 km/h and Himanshu increases his average speed by 4 km/h, then what will be the difference in time taken by them to reach their destination?
1) 1 47/133 hr
2) 1 41/133 hr
3) 2 47/133 hr
4) 1 40/133 hr
5) 1 45/133 hr

• 48=d/6
  therefore, distance(d)=288km
  himanshu's speed=288/4=72kmph
  then, disha's speed=48+8=56kmph
  disha's time=288/56=5.143hr
  then, himanshu's speed=72+4=76kmph
  himanshu's time=288/76=3.789hr
  difference in time=5.143-3.789=1.354hr=1 47/133hr
• 7 years agoHelpfull: Yes(28) No(8)
• distance=s*t =48*6 = 288 km
  himanshu speed=288/4 = 72 km/h
  disha new speed=48+8= 56km/h
  himanshu new speed=72+4 = 76km/k
  time difference= (288/56) - (288/76)
  =180/133 => 1 47/133
• 7 years agoHelpfull: Yes(10) No(3)
• 180/133 is the answer
• 7 years agoHelpfull: Yes(8) No(3)
• distance=48*6=288
  himanshu's speed=288/4=72
  new speed of disha=48+8=56
  new speed of himanshu=72+4=76
  tome difference=288/56-288/76=1 47/133 hr
• 7 years agoHelpfull: Yes(2) No(3)
• answer 1 47/133 hr
• 7 years agoHelpfull: Yes(1) No(2)
• 1 47/133 is the answer
  
• 7 years agoHelpfull: Yes(0) No(2)
• 1) 1 47/133
• 7 years agoHelpfull: Yes(0) No(1)