A person goes to his office at 1/3rd of the speed at which he returns – McqOptions

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1.	A person goes to his office at 1/3rd of the speed at which he returns from his office. If the average speed during the whole trip is 12 m /h . what is the speed of the person while he was going to his office?
A.	10
B.	6
C.	8
D.	can't be determined
Answer» D. can't be determined

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