Question

while arriving jaya travels 30 kilometer with a uniform speed of 49 kilometer/ hour and next 30 kilometer with a uniform speed of 20 km/hour.find average speed.

Answer 1

Given Distance(1)=30km
Given Speed (1) =49 km/hr
Therefore Time(1)=Distance/Speed=30km/49km/hr=30/49 hr
Given Distance (2)=30km
Given Speed(2)=20km/hr
Therefore Time(2)=D(2)/S(2)=3/2hr
Therefore Total Distance=30km+30km=60km
Total Time=(30/49 )+(3/2) hr=207/98 hr
Therefore Average Speed= Total Distance Covered / Total Time Taken=60km/207/98hr=1960/69 km/hr=28.405797 km/hr
Hope I Have Helped You!