A scootrist travelled from his house to a town at the speed of 40km/h and returned at a speed of 20km/h. If the whole journey took

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1. Answer:

   80km

   Step-by-step explanation:

   total time(t) = t1 + t2;

   let s be distance between town and house;

   time= distance/speed;

   6= s/40 + s/20;

   On solving we get,

   s = 80km

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