From above graph find how much distance Amit covered after one and half hour journey ?​

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1. Answer:

   Let the distance between A and B = D km.

   Time taken by Amit to cover the distance = D/80 hrs.

   Now 75% of D = 3D/4 km and 2/3 of D/80 = D/120 hrs.

   Left over distance i.e. D – 3D/4 = D/4 km.

   Left over time = D/80 – D/120 = D/240 hrs.

   Left over distance goes by x km/h. So time taken = D/4x hrs.

   Hence as per questions, D/4x = D/240

   Or, x = 60

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