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A man starts from his home at 8.00 am to...

A man starts from his home at `8.00` am to his office. He walks with a speed of `2 ms^(-1)` on a road upto his office `3.0 km ` away from his home. He stays in the office upto `4.00 pm` and returns to his home by which moves non-stop with a speed of `10 ms^(-1)`. Calculate
(i) the time taken by man to reach his office and
(ii) time taken by man to reach his home. Also plot `x-t` graph of his motion.

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