Question

2 trains start at the same station and move in the opposite directions at the speed of 40 km per hour and 65 km per hour respectively. in how many hours will they be 315 km apart​

Answer 1

Answer:

3 hour

Explanation:

opposite direction

in 1hour =105

Answer 2

Answer:

let time be t

we know time × speed = distance

therefore, 40 × t +65 ×t =315

40t +65t =315

105t = 315

t =315÷105

t =3hrs