Question

50 points

A takes 3 hrs more than B to walk a distance of 30 km. but if A doubles his speed he is ahead of B by 1.5 hrs . Find the speed of A and B​​

Answer 1

hello

Speed Is inversely related to time : More time less speed ,Less speed more time"

D= 30 km : X = let x b time taken by B

Speed of B = 30 /x ; speed of A : 30/[x+3] { A take 3 hours More}

A:B = x/{x+3} ----------- Eq 1

Also A doubled its Then Speed A = 30/x-1.5 , B is same

2A:B = x/[x-1.5] -- eq 2

Solving For x Eq1 & 2 We get x=6 --->> B = 5kmph , A=10/3

Ratio of A:b = 2:3

Answer 2

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