How many minutes does aditya take to cover a distance of 400m , if he runs at a speed of 20kmph

He is running at the speed of 20*5/18 m/s

so for 400m ,he takes

400/(20*5)/18 = 72 sec

= 1 . 2 min =6/5 min

32: from largest to smallest, this hierarchy includes eons, eras, periods, epochs, and ages.

33: answer is c

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