Amit goes to his office from home at 64 kmph but returns home at a lower speed. If his average speed for the trip is 56 kmph, what is his return speed? (1) 48 kmph (2) 50 kmph (3) 52 kmph (4) 50.5 kmph
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yessssssssssssssssssssssssss , i don't know the ans.
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