From points A and B, the distance between which is s km, two cars drove out simultaneously towards each other

From points A and B, the distance between which is s km, two cars drove out simultaneously towards each other. The speed of one of them is 60 km / h, and the other is 80 km / h. What is the distance between the cars in 2 hours if it is known that: a) the meeting has not yet taken place; b) the meeting has already taken place and the cars continued to move.

Let’s determine the total number of kilometers covered in one hour of movement by the first and second cars that go towards each other:

60 + 80 = 140.

Let’s determine the total number of kilometers covered by the first and second cars in two hours of movement:

140 * 2 = 280.

Let’s determine what the distance will be between the cars, if the meeting has not yet taken place:

s – 280.

Let’s determine what distance will be between the cars if the meeting has already taken place:

280 – s.

Answer: a) s – 280 km, b) 280 – s km.