Two persons ` A` and `B` are walking with speed ` 4 km h^(-1)` and ` 5 km h^(-1)` respectively in the same direction. After ` 3` hours, the separation of ` B` from `A` will be ………………………… .

Two objects A and B are walking with speed 6 km/h and 10 km/h respectively in the same direction. Find the relative displacement of B w.r.t. A after 4 hours.

Two objects A and B are walking with speed 6 km/h and 10 km/h respectively in the same direction. Find the relative displacement of B w.r.t. A after 4 hours.

Two cars A and B are moving on the straight parallel paths with speeds 36 km h^(-1) and 72 km h^(-1) respectively starting from the same point in the same direction. After 20 min , how much behind is car A and from car B ?

The distance between two places A and B is 60 km.Two cars start at the same time from A and B, travelling at a speed of 35 km/h and 25 km/h, respectively.If the cars run in the same direction,then they will meet after (in hour). (A) 6.5 (B) 6.2 (C ) 6 (D) 6.52

Two runners, A and B, cover the same distance at the speeds of 15 km/h and 16 km/h, respectively. If A takes 16 min more than B, then the distance ( in km) is