Total distance = (100 x2) + (X x 1 ½)
Total time = (2 + 1 ½ )hrs
Average speed = total distance /total time
90 = (100 x2) + (X x 1 ½)/(2 + 1 ½ )hrs
Solve the value of X =73 ½ km/h
joseph rimiru answered the question on October 10, 2017 at 14:04
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