a truck travels 90 km/hr for the first 1 1/2 hours. After that it travels 70 km/hr. Find the time taken by the truck to travel 310 kilometers
Answers
Answered by
12
Truck travels 90km/hr for 1 1/2 hours or 3/2 hours
distance travelled = 90*3/2 = 135 km
total distance = 310km
After that it travels 70 km/hr.
So distance travelled at 70km/hr= 310-135 = 175km
time = distance/speed = 175/70 = 5/2 hours
total time = 3/2 + 5/2 = 8/2 = 4 hours
distance travelled = 90*3/2 = 135 km
total distance = 310km
After that it travels 70 km/hr.
So distance travelled at 70km/hr= 310-135 = 175km
time = distance/speed = 175/70 = 5/2 hours
total time = 3/2 + 5/2 = 8/2 = 4 hours
Nazee:
Thank a lot, am preparing for ssc exams, it is very much helpful for me
you are welcome Nazee!
Answered by
6
hi there,
distance traveled when it traveled 90kn/h= 90*3/2=135
distance left=310=135=175
therefore time taken to cover 75km=175/70=2 1/2 hours.
total time =11/2 + 2 1/2 = 4 hours
i hope this helps u...
distance traveled when it traveled 90kn/h= 90*3/2=135
distance left=310=135=175
therefore time taken to cover 75km=175/70=2 1/2 hours.
total time =11/2 + 2 1/2 = 4 hours
i hope this helps u...
Similar questions