Предмет: Математика, автор: 7782ALBINA

Ваня собирал пазлы.Первый пазл,он собрал ,состоял из 300 деталей, а в каждом следующем пазлесли было на 200 деталей больше, чем в предыдущем. Всего Ваня собрал пять пазлов.1)Сколько деталей было в четвёртом пазлы, собранном Ваней? 2)Сколько всего деталей установил Ваня,правильно собрав все пять пазлов?

Ответы

Автор ответа: aleksandruklili

300д-1п
300+200=500-2п
500+200=700 -3п
700+200=900 -4п
900+200=1100 -5п

300+500+700+900+1100=3500п
ответ 3500д установил все 5 п
ответ в 4 пазле 900деталей

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