Question

a boy cover 21/2km long distance out of which he cover 18/11km scooter and 17/3 km by cycle and rest on foot find out the distance covered by foot
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Answer 1

Step-by-step explanation:

Let the time he walks be x hours

From the given condition

3(x)+9(3−x)=15⟹6x=12⟹x=2

So the time he runs is 3−2=1 hour

Distance covered by running is 1×9=9 km