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Baba Shankateswar Samantaray

· started a discussion

· 1 Months ago

Detail explanation needed (Question: 271938.0 )

Please explain the solution.

Question:

A student goes for interview at centre from his home, which is 12 km apart. His speed is 6 km/h. After 10 min he feels that he left his important documents at home. He returns at home and now he travels with fast speed. Find his new speed?

Options:
A)

7 km/h

B)

7.8 km/h

C)

7.2 km/h

D)

10 km/h

Solution:

Ans: (c)

  

Tushar Rawat

· commented

· 1 Months ago

he have to travel the distance in the initial time ..i.e 2 hours....20 min wasted in going and returning ..remaining time 5/3 hours ..distance 12 km ..then find speed
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