Из-за чего происходит икота?

Пётр едет из P в Q с поставленной скоростью, если скорость увеличить на 3, то Пётр доедет в 3 раза быстрее. Во сколько раз Пётр быстрее доедет Пётр, если скорость увеличить на 6?
пожалуйста с решением и подробным объяснением

ПОМОГИТЕ ПОЖАЛУЙСТА

исправте ошибки в предложениях.

помогите это срочно! 

1.Little Tom doesn't never swim here.

2.There are a ball and three bolls in the box.

3.-Is there a bookshop near your scholl?

   -Yes,it is.

4.We fond of playing with our pets.

5.We made the friends two years ago.

6.Is it often snow here?

7.It is rain now.

8.Let's sent him a postcard.

9.Do you enjoy to go to the theatre?

10. Did he met mrs Green in the park?

И в этом тоже надо исправить ошибки

1. A crocodile has a long mouth with many big tooth.

2.An elephant is a very large wild animal that live in Africa and Asia.

3.Rabbit is a small animal with long ears.

4.When did they visited the Tretyakov Gallery?

5. Who does want to visit the History Museum.

6.The Smiths wants to go to the Boshoi Theatre next Sunday

7.The Tretyakov Gallery is one of the best museum in the world.

8.The boys' aunt studied Italian, didn't he?

9.Tom's sister ckeaned the windows, wasn't she?

10.He isn't want to go to Hyde Park now.

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