Two boats were moving at the same speed, the first one covered 130 km, the second 145 km.

Two boats were moving at the same speed, the first one covered 130 km, the second 145 km. find the speed with which each boat was moving if one of them was on the way for 20 minutes more than the other.

It is necessary to think as follows: if the boats were sailing at the same speed, and the second one sailed a little more distance, then we find out what distance having covered the second boat in twenty minutes:

1) 145 km – 130 km = 15 km.

And so, it means that the boat sails 15 kilometers in twenty minutes. 20 minutes is 1/3 third of an hour. Therefore, in one hour the boat will overcome:

2) 15 km * 3 parts = 45 kilometers / hour – boat speed.

Bottom line: the speed of both boats is forty-five kilometers in one hour.