1 A: Linda ...is learning... (learn) to drive at the moment.
B: I know. She told me last week.
2 A: Has Alan got a job?
B: Oh yes. He … (be) the manager of a leisure centre.
3 A: Do you want to have a break now?
B: Not yet. I … (write) a report for tomorrow's meeting.
4 A: It's ten o'clock. Have you given the manager his letters?
B: Yes, and I … (also/type) six reports so far this morning.
5 A: Is Jeff still in the garden?
B: Yes. He … (plant) flowers all afternoon.
6 A: That author is very well-known, isn't she?
B: Yes. She … (write) twenty novels so far.
7 A: You look very happy today.
B: I am. I … (just/hear) some good news.
8 A: What time … (the play/start) tonight?
B: Seven o'clock, I think.
9 A: Are you new to this company?
B: Not really. In fact, I … (work) here for almost two years.
10 A: Are you ready for the concert?
B: Yes. I … (practise) for weeks.
11 A: Do you do any exercise at all?
B: Yes. Actually, I … (go) swimming three times a week.
х желудей - в 1-м тайнике;
у желудей - во 2-м тайнике.
1/2 х желудей осталось в 1-м тайнике после того, как сойка половину перенесла во 2-й, в котором стало у+ 1/2 х желудей.
(у+ 1/2 х)/2 желудей осталось во 2-м тайнике после того, как сойка половину перенесла в 1-й, в котором стало 1/2 х+ (у+ 1/2 х)/2 желудей.
1/2 х+ (у+ 1/2 х)/2 =26
(у+ 1/2 х)/2 =14
1/2 х+ (у+ 1/2 х)/2 - (у+ 1/2 х)/2 =26-14
1/2 х =12
х=12÷0,5=24 желудей было в 1-м тайнике изначально.
(у+12)/2=14
у+12=14×2
у=28-12=16 желудей было во 2-м тайнике изначально.
24>16
ответ: 24 желудей изначально было в 1-м тайнике.
1 A: Linda ...is learning... (learn) to drive at the moment.
B: I know. She told me last week.
2 A: Has Alan got a job?
B: Oh yes. He … (be) the manager of a leisure centre.
3 A: Do you want to have a break now?
B: Not yet. I … (write) a report for tomorrow's meeting.
4 A: It's ten o'clock. Have you given the manager his letters?
B: Yes, and I … (also/type) six reports so far this morning.
5 A: Is Jeff still in the garden?
B: Yes. He … (plant) flowers all afternoon.
6 A: That author is very well-known, isn't she?
B: Yes. She … (write) twenty novels so far.
7 A: You look very happy today.
B: I am. I … (just/hear) some good news.
8 A: What time … (the play/start) tonight?
B: Seven o'clock, I think.
9 A: Are you new to this company?
B: Not really. In fact, I … (work) here for almost two years.
10 A: Are you ready for the concert?
B: Yes. I … (practise) for weeks.
11 A: Do you do any exercise at all?
B: Yes. Actually, I … (go) swimming three times a week.
х желудей - в 1-м тайнике;
у желудей - во 2-м тайнике.
1/2 х желудей осталось в 1-м тайнике после того, как сойка половину перенесла во 2-й, в котором стало у+ 1/2 х желудей.
(у+ 1/2 х)/2 желудей осталось во 2-м тайнике после того, как сойка половину перенесла в 1-й, в котором стало 1/2 х+ (у+ 1/2 х)/2 желудей.
1/2 х+ (у+ 1/2 х)/2 =26
(у+ 1/2 х)/2 =14
1/2 х+ (у+ 1/2 х)/2 - (у+ 1/2 х)/2 =26-14
1/2 х =12
х=12÷0,5=24 желудей было в 1-м тайнике изначально.
(у+12)/2=14
у+12=14×2
у=28-12=16 желудей было во 2-м тайнике изначально.
24>16
ответ: 24 желудей изначально было в 1-м тайнике.