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girdhari

· started a discussion

· 1 Months ago

(Question: 339100.0 )

t=d/6z , why you take 2d ( we already let distance is d km )

so right ans 1/x+1/y=1/2z

Question:

A man rides one-third of the distance from A to B at the rate of x km/hr and the remainder at the rate of 2y km/hr. If he had travelled at a uniform rate of 6z km/hr, he could have ridden from A to B and back again in the same time. Which one of the following is correct?

Options:
A)

z = x + y

B)

3z = x + y

C)

1z=1x+1y    

D)

12z=1x+1y    

Solution:

Ans: (c)

  

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