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Anshu Ranjan

· started a discussion

· 1 Months ago

doubt (Question:586500.0)

yaha 2n-1 kaha se aaya ?

Question:

The distance between two points A and B is 1000m. Object O1 is initially at A and O2 is at B. The speeds of O1 and O2 are respectively 80 m/s and 120 m/s. They move between A and B to and fro. Find the total distance traveled by A and B at the point of the fourth meeting and also find the time taken in it.

Options:
A)

7000 m, 35 s

B)

4000 m, 20s

C)

5500 m, 15 s

D)

4500 m, 25 s

Solution:

Ans: (a)

Distance covered in 4th meeting = (2n – 1)d

= ( 2 × 4 – 1) 1000

 = 7000 m.

Total time taken =  700080+120   

=7000200    

= 35s.


Knowledge Expert

· commented

· 1 Months ago

Dear student,
We have update the solution .Please check now, keep learning with us.

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