Math, asked by RUTVI1, 1 year ago

out of Total distance covered of 200 kilometre first half is covered at the speed of 60 kilometre per hour and the remaining half is covered at 75 kilometre per hour find
1) the total time taken to cover the whole journey
2) the average speed for the whole journey


Lawliet: By First Half do u means 100 km???

Answers

Answered by KhanKareem
4
1)Time for First half 
                         time=distance/speed
                             t₁= 100/60
                             t₁= 1.67 hours
Time For Second half 
                      time=distance/speed
                           t
₂ = 100/75
                           t₂ = 1.33 hours 
Total Time = t₁+t₂
                  = 1.67 +1.33
                  = 3 Hours 
2)Average Speed For Whole Journey
                           = Total Distance/ Total Time 
                           = 200/3
                           =66.67 km/h

KhanKareem: Mark as Brainleast
stalin1: ans is wrong bro... if 1.30 +1.30 is equal to 3 hr... then how u answer is come 3hr... covert hour to min after add the min you got answer
stalin1: your answer wrong
Answered by stalin1
0
T is 3hr 40 min
avg. speed 66.6kmph
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