I am trying quantitative aptitude questions of a qualifying exam and I couldn't solve this question.
A stream of ants go from point A to point B and return to A along the same path. All the ants move at a constant speed and from any given point 2 ants pass per second one way. It takes 1 minute for an ant to go from A to B. Ho many returning ants will an ant meet in its journey from A to B?
I marked A as that ant will meet 120 ants as at a point only 2 ants can pass per second.
But answer is