Предмет: Математика, автор: Frogmank

Трех тарелках лежало 90 конфет на первой тарелке в 2 раза больше чем на третьей А на второй тарелки в три раза больше чем на первую Сколько конфет на каждой тарелке?

Ответы

Автор ответа: dmiruzaeva
2

Ответ:

На первой тарелке 20 конфет, на второй 60, на третьей 10

Пошаговое объяснение:

пусть на третьей тарелке х конфет. составим и решим уравнение

х+2х+6х=90

9х=90

х=10

2х=20

6х=60


Frogmank: Спасибо большое за ответ!!!
Frogmank: Только у меня вопрос, откуда мы взяли 6х?
dmiruzaeva: перечитай условие: там написано, что во второй тарелке в три раза больше, чем в перво, а в первой-в два раза больше чем во второй, есть выразить через третью тарелку, то есть х, то 2х3=6
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