Asked by kayode
a man travelled xhrs at 5km/hr and yhrs at 8km/hr .Distance travelled altogether is 20km. find x and y if the average speed for the journey is 7km/hr
Answers
Answered by
bobpursley
avg speed=20km/time
time=20/7 hrs
but
20=x*5+7(20/7-x)8
solve for x, then y=20/7 -x
time=20/7 hrs
but
20=x*5+7(20/7-x)8
solve for x, then y=20/7 -x
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