Một số tiền gồm 20 tờ bạc vừa loại 5 ngàn, vừa loại 10 ngàn. Số tiền loại 10 ngàn nhiều hơn số tiền loại 5 ngàn là 35 ngàn . Tính số tờ bạc mỗi loại.

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IV. Read the text, then answer the questions below This is Peter. He is twenty-four years old and he’s an engineer. There are five people in his family: his father, his mother, his two sisters and he. His father is fifty-one and he is an engineer, too. His mother is forty-eight years old. She is a doctor. His sisters are twelve and seventeen. They are students 1/. What is his name? ->…………………………….…………………………………… 2/. How old is he? ->……………………..………..……………………………………….. 3/. What does he do?->……………………..……………….………………………………… 4/. How many people are there in his family? ->……………………..……………….…………………………………..……… 5/. How old is his father?->……………………..……………….…………………………… 6/. Is his father an engineer? ->……………………..……………….………………………… 7/. How old is his mother? ->……………………..……………….………………………… 8/. Is his mother a nurse? ->……………………..……………….…………………………………..……… 9/. How old are his sisters? ->……………………..……………….………………………………………..……… 10/. What do his sister do? ->……………………..……………….……………………………………..………