A boy goes to his school from his house at a speed of 3 km/hr and returns at a speed of 2 km/hr. If he takes 5 hours in going and coming, the distance between his house and school is:

• total distance between home and school is constant..!!
  so, take average speed of the boy= (2*3*2)/(2+3)=12/5
  speed*time=distance;
  so we have speed =12/5 and time = 5
  distance=(12/5)*5=12...
• 7 years agoHelpfull: Yes(1) No(0)
• let the distance is x
  so x/3 + x/2 = 5 or 5x/6=5 or x=6 so distance will be 6 km
• 8 years agoHelpfull: Yes(0) No(1)