A, B and C walk 1 km in 5 min, 8 min and 10 min, respectively. C starts walking from a point at a certain time, B starts from the same point 1 min later and A starts from the same point 2 min later than C Then, A meet Band C at times

Options

A. 2 minute , 3 minute /2 मिनट, 3 मिनट
B. `4/3`minute ,3 minute /`4/3` मिनट, 3 मिनट
C. `5/3 minute` , 2 minute/`5/3` मिनट, 3 मिनट
D. 1 minute , 2 minute /1 मिनट, 2 मिनट

Answer

C

Explanation

`V_A=("दूरी")/("चाल")=1000/5=200` m/m
`V_B=1000/8=125m//h`
`V_C=1000/10=100` m/h
A तथा B की सापेक्ष दूरी `= 1 xx 125 = 125 m `
A तथा B का सापेक्ष वेग = `V_A-V_B=200-125=75` m/m
`therefore` समय `=125/75=(5/3)m`
A तथा C का सापेक्ष दूरी `=2 xx 100=200 m`
सापेक्ष वेग `=V_A-V_C=200-100=100 m//m`
`therefore` समय `=200/100=(2m)`
`(5/3,2)`