Suresh Raina and Gautam Gambhir after a scintillating IPL match decide to travel by cycle to their respective villages. Both of them start their journey travelling in opposite directions. Each of their speeds is 6 miles per hour. When they are at a distance of 50 miles, a housefly starts flying from Suresh Raina's cycle towards Gautam Gambhir at a relative speed of 17 miles per hour with respect to Raina's speed. What will be the time taken by housefly to reach Gambhir?

a) 10 hrs
b) 15 hrs
c) 20 hrs
d) 25 hrs

• as intialy both of them travelling in opp. direction add both of their speeds i.e 12MPH,
  now the fly is moving from raina with speed 17MPH
  now subtract this speed from both of above speeds =5MPH
  so finally 50/5=10hrs
• 11 years agoHelpfull: Yes(56) No(3)
• fly speed=11
  11*t-6*t=50
  t=10
• 11 years agoHelpfull: Yes(10) No(5)
• let the speed of fly be x miles/hr .so x+raina's speed= 17 ,therefore fly's speed= 17-6 which is 11.it is going towards Gambhir so relative speed wrt to gambhir=11-6=5 . now time taken will be 50/5=10 hrs
  
• 9 years agoHelpfull: Yes(4) No(2)
• the answer is 25 hours.
• 11 years agoHelpfull: Yes(2) No(29)
• a) 10 hrs bez the speed of housefly is 17-6=11..
• 9 years agoHelpfull: Yes(0) No(3)