1. The distance from A to B is 12 km The
Speed B is 2 kmlhr more than A
B takes 3omin less than A find the time
ta

2 thoughts on “1. The distance from A to B is 12 km The<br />Speed B is 2 kmlhr more than A<br />B takes 3omin less than A find the time<br />ta”

1. Answer:

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2. Suppose B takes t hours to walk d km.

   Then, A takes (t + 2) hours to walk d km.

   With double speed, A will take 1/2 (t+2) hours.

   ∴t−1/2(t+2)=1

   ⇒2 t−(t+2)=2

   ⇒t=4

   ∴ B takes 4 hours to walk d km.

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