self Maths Puzzle

A person covers 800km partly at a speed of 50kmph and partly at a speed of 150kmph, in 10 hours over all. What is the distance covered at the speeds of 150 kmph?

Read Solution (Total 1)

average speed= 800/10=80
ratio of distance covers at speed of 50km &150km= 7:3
distance covered at 150km=30/(7+3)*3= 9km
8 years agoHelpfull: Yes(0) No(6)

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