Предмет: Математика, автор: tkachenkopvl703

В России бабушка купила 9 мотков шерсти белого и красного цвета. За красные мотки она заплатила 320 руб,а за белые 400 рублей. Сколько белых и красных мотков по отдельности купила бабушка, если все мотки стоили одинаково

Ответы

Автор ответа: sheykinaelena90

33

Решение:

1) 320 + 400 = 720 (стоят красные и белые мотки вместе)

2) 720 : 9 = 80 (стоит 1 моток)

3) 320 : 80 = 4

4) 400 : 80 = 5

Ответ: 5 белых, 4 красных.

Предыдущий вопрос

Следующий вопрос

Похожие вопросы

Предмет: Алгебра, автор: iiiiiiioio

помогите с неравенством!

5 лет назад

Предмет: Английский язык, автор: andrykushpnir2

Writing . Semester 2. 10th form. Variant B
Дуже срочно!!
Task 1 Complete the sentences with the missing words. Use phrasal verbs.
0 I am going to take part in the cycling race this year.
1 The best way to __________ off calories is to do energetic exercise every day.
2 Ken doesn’t __________ in for team sports much, but he does go running every day.
3 I don’t think I’ll ever __________ into the school basketball team – they think I’m too short to play well!
4 Her whole family was waiting at the finish line to ___________ Susan on when she completed the race.
5 Do you think you’re a good enough player to _________ on the challenge of playing in a national competition?
Task 2. Complete the sentences with the correct form of the verbs in brackets.
0 No one has ever told me what I should do (do) in such a situation.
1 We must all _____________ (talk) to each other to find an answer to this problem.
2 What time do you expect _____________ (arrive)?
3 I keep _____________ (lose) my keys – it’s so annoying!
4 I let my sister _____________ (borrow) my laptop.
5 The teacher warned us ________________ (not / be) late.
Task 3 .Use the prompts to complete the sentences. Use the Past Simple, Past Continuous or Past Perfect Simple.
0 When I got home, my cat was playing with her ball (my cat / play / with her ball) happily.
1 ________________________________ (his sisters / play) a computer game when you visited Neil last weekend?
2 Tom said he could teach me how to swim but _____________________ (I / not / accept) his offer.
3 I couldn't go to Alex's birthday party because ____________________________ (I / break / my leg) the day before.
4 We didn't answer all the questions in the sports quiz because ___________________ ________ (we / not / read / any books) about cricket.
5 At 9 a.m. everyone was watching as ___________________________________ (the athletes / get / ready) for the most important event of the Olympics.
Task 4 Complete the sentences with the correct form of the verbs in the box. There are two extra verbs.
stuck get travel cross go miss walk see
0 If you don’t want to drive, you can always travel by train.
1 I tried to __________ barefoot on the beach, but the sand was too hot!
2 Drive on to the bridge to __________ the river.
3 Sheila missed the bus, so she had to _________ a lift to the airport from a friend.
4 We were _________ in traffic for nearly an hour so we missed the start of the concert.
5 I ____________ the bus because the alarm clock didn't wake me up this morning.
Task 5. Rewrite the sentences using the words in capitals.
1 It is possible that the plane will land at a different airport because of very bad weather in Liverpool.
MAY-------------------------------------------------------------------------------------------------------------------
2.I'm sure that Sean has studied Spanish before because he speaks it fluently.
HAVE ______________________________________________________________________
3. I'm sure that woman isn't Andy's mother – she's too young.
BE ______________________________________________________________________
4 It's still possible that we will save enough money to go to Peru.
MIGHT ______________________________________________________________________
5 It's possible that Janet's car broke down before she reached London.
COULD
______________________________________________________________________
Task 6. Used to and would Rewrite the sentences using used to or would in the correct form.
0 Did you go to school by bus when you were ten?
used to: Did you use to go to school by bus when you were ten?

1 I didn't like eating fish and chips for lunch.
used to: _____________________________________________________________________
2 Tina went to the zoo twice a year.
would: ______________________________________________________________________
3 Who stayed at your grandparents’ house in the summer?
used to: ______________________________________________________________________
4 People didn't talk on the phone on the bus.
used to: ______________________________________________________________________

5 Was Sandra the best student?
used to: ______________________________________________________________________

5 лет назад

Предмет: Физкультура и спорт, автор: VANNY1

ПОМОГИТЕ СРОЧНО ПЖ, УМОЛЯЮ

5 лет назад

Предмет: Математика, автор: ден718

За 1 ч автомобиль проехал 84 км. Сколько км он проедет за 10 минут?

8 лет назад

Предмет: История, автор: mohruhsor

характеристика политического устройства во франции

8 лет назад