A student takes 20 mins if he go with speed 15kmph ,then at what speed he should go to reach in 15 mins

• distance=speed*time
  15*20/60=5km
  time=15/60=1/4
  distance=4*5=20kmph
  
• 13 years agoHelpfull: Yes(22) No(1)
• speed=distance/time
  diistance=speed*time
  
  d=s*t
  =15*(20/60)=5 km
  
  s=d/t
  =5/(15/60)=20 kmph
• 9 years agoHelpfull: Yes(2) No(0)
• d=s*T
  =15*20
  d=300
  s=d/t
  given time=15
  s=300/15
  s=20
• 9 years agoHelpfull: Yes(1) No(0)
• 20 min , spd =15km/hr hence 1/3 of time he travel 5 km
  15 min =1/4th of time hence if speed =20km
• 9 years agoHelpfull: Yes(1) No(0)
• 15*20/15=20kmph
  
• 9 years agoHelpfull: Yes(1) No(0)
• 15 kmph------->20 min---->20/60 hours=1/3 hour
  x kmph ------>15min----->15/60 hours=1/4hpur
  here distance is same so
  15*1/3=x*1/4
  then x=20 kmph
  
  
• 9 years agoHelpfull: Yes(1) No(0)
• ans 20 km/h
  distance=15*20/60=5 km
  speed=5/(15/60)=20 km/h
• 9 years agoHelpfull: Yes(1) No(0)
• student takes 20 mins with speed 15km/60 min
  therefore,he covers distance=20 mins*15km/60 min
  =5km
  Now,we need to find the speed by which he should reach the same distance(5km) in 15mins.
  speed=5km/15mins
  =5km*60/15hr
  
  
• 9 years agoHelpfull: Yes(0) No(1)