In 20 seconds, the leopard ran 3 1x20 = 620m.

In 20 seconds, the antelope ran 22x20=440.

So the leopard ran 620-440 meters more than the antelope in 20 seconds =180 meters.

180m >150m.

So the leopard can catch up with the antelope in 20 seconds.

The role of the Olympics

In this process of constructing mathematical model, students' ability to look at and deal with practical problems from a mathematical point of view can be effectively cultivated, students' awareness and ability to solve practical problems with mathematical language and models can be improved, and students' ability to reveal mathematical concepts hidden in practical problems and their relationships can be improved.

In this creative thinking process, students can see the practical function of mathematics, feel the charm of mathematics and enhance their sensitivity to the beauty of mathematics. Today, with the emphasis on quality education, this educational function of Olympic mathematics has more important practical significance.