aman walks at 6kmh and runs 8 km/h. He covers 6km in 50 min partly by running and partly by walking ? for how long did he walk?
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Answer:
20 mins
Step-by-step explanation:
x/6 + 6-x/8 = 50/60
4x+18-3x/24 = 5/6
6x+108 = 120
Therefore the distance he covers in walking is 2km.
Time (in walking) = 2×1/6
= 1/3
= 20 mins
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