Question 4
An, Minh and Phuong attend the same school. On Monday afternoons they travel from school to a bookshop at different times. An leaves at $2 : 00$ and arrives at $2 : 40$. Minh leaves at $2 : 05$ and takes $25$ minutes. Phuong leaves at $2 : 15$ and takes $20$ minutes. In what order do they arrive?