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A man walks at 6km/h and runs at 8km/h. he covers 6km in 50 min partly by running and partly by walking.

(i) for how long did he walk?

(ii) What distance did he covers walking?

Asked by bishtbharat869 16th August 2019, 10:17 PM
Answered by Expert
begin mathsize 16px style According space to space the space question comma space space we space get
straight x over 6 space plus space fraction numerator 6 space minus space space straight x over denominator 8 end fraction space equals space 50 over 60
rightwards double arrow fraction numerator 4 straight x space plus space 18 space minus space 3 straight x over denominator 24 end fraction space equals space 5 over 6
rightwards double arrow space 6 straight x space plus space 108 space equals space 120
rightwards double arrow space straight x space equals space 2
Therefore comma space the space distance space he space covers space in space walking space equals space 2 km.

Time space left parenthesis in space walking right parenthesis space equals space fraction numerator 2 space cross times 1 over denominator 6 end fraction space equals space 1 third space equals space 20 space mins.

end style
Answered by Expert 19th August 2019, 12:33 PM
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