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Sam ji

· started a discussion

· 1 Months ago

Pls explain (Question: 269979.0 )

Pls explain this solution more elaborately. To be specific last 2-3 steps.

Question:

A circular track 4 m wide has an inner radius of 38 m. What time will be taken by a person running 5 rounds along the track outer side at 3 m per second?

Options:
A)

5 min 20 sec

B)

10 min 10 sec

C)

7 min 20 sec

D)

7 min 10 sec

Solution:

Ans: (c)


Knowledge Expert

· commented

· 1 Months ago

Dear student
According to solution
Distance covered in 5 round = 1320 m
Given, 3m = 1 sec
so, Req. answer = 1320 / 3
= 440 sec
= 7 min. 20 sec.

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