đổi 90 tạ = 9 tấn

số chuyến cần: 108/9 = 12 chuyến

II. Read the passage and answer the questions

   Health and fitness are not just for young people. They are for anyone willing to accept the rules of a good diet and regular exercise. With age, there is a tendency to feel that the body is no longer able to perform well. Yet example after example shows us that older people can – and should – be active. Many men and women in their sixties have run in marathons, races of more than sixty – six miles.

   For most people, they need simple activities like walking and swimming to stay in shape. It’s important to include exercise in your daily routine. In the winter, do push- ups, sit – ups, and other indoor exercise.

Who are health and fitness for?