A person divides his total journey into 3 parts and decides to travel them at the speeds of 30 kmph , 60kmph , and 80kmph respectively. He completes his journey in 10 hours . Then the total distance travelled is ?
A/ 420km B/ 480km
C/ 460km D/ 520km
E/ None of these
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Answer:
none of these the answer is 566.66667
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