из чисел 6,2,15 и 5 составь две суммы так, чтобы значение одной было в 3 раза меньше значения другой суммы

в чем заключается реальная опасность инфляции для экономики страны

Очень срочно!Помогите вычленить главную информацию из текста,для пересказа:

Ruby and Garnet are ten-year-old identical twins who do everything together, even more so now since their mother mother died three years earlier. Their "double act" certainly troubles and even spooks Rose, the new woman in their dad's, life.

Garnet and I have this special language. We've got heaps of made-up words for things. Sometimes we don't use words at all, just signs and gestures. We can communicate just by widening our eyes or putting out heads slightly to one side. Sometimes we just signal each other to both start a pretend coughing fit or to sneeze simultaneously or to shriek with manic laughter.
Rose, my father's girlfriend, isn't used to this. She thinks it's spooky. This happened recently one day we were in the car with my dad and Rose.
"Pack it in," dad said. I glanced at Garnet.
"Pack in what, dad?" we said simultaneously.
"Less of the cheek," dad said, taking one hand off the steering wheel and swatting at us.
"How do they do that?" Rose asked.
"How do we do what?" we asked.
"Stop it! You're giving me the creeps. Can you really read each other's thoughts?" she asked, shivering.
"Of course they can't," dad said.
"Then how can they say the same thing at the same time in that weird way?" Rose asked, peering at us.
"I don't know," dad said, shrugging,
"But we know," we said, and we raised our eyebrows and made our eyes glitter in a mysterious and mystic manner.

РЕшиет плиз!

1-В одном классе учатся Иван,Пётр, Сергей.Их фамилии ПЕтров ,Иванов и Сергеев.Установите фамилию каждого из них, если известно , что Иван не Ивано,Петр не Петров и Сергей не Сергеев.И что сергей живёт в одном доме с Петровым.  

2-Три друга Винни-Пух, Пятачок и Кролик пошли гулять в красной, зелёной и синей рубашках.Их туфли были тех же цветов.У Винни Пуха цвет рубашки и туфель совпадали ,У Пятачка ни туфли ни рубашка не были красными .,а Кролик был в зелёных туфлях.Как были одеты друзья?

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