A person leaves a al 6 am, walks from a lo b with a uniform speed of 4 kmph, from b lo at 6 kmph, c to b at 3 kmph and then back to a at 4 kmph. c if the time interval between the moment he is at b is 90 minutes and he was at cat 7 am find the time when he returns to a a) 8.30am b) 8.00am cst) 9.00am d) 8.45am
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Answer is 8:30AM Okkkk
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