Предмет: Математика, автор: maratoverasyl7

В 1т бетона содержится 400 кг цемента, 300 кг щебня, остальное - песок. Сколько процентов песка
содержится в бетоне?
Orser:​

akzhanaidoskyzy981: У кого реклама ответ 30%
dauletakonfeta: ок

Ответы

Автор ответа: paladinsmail4232
48

Ответ:

30%

Пошаговое объяснение:

Если бетона - 1т а в нем содержится 400кг цемента и 300 кг щебня то остается всего 300кг которыми и является песок. а 300 от 1000 это 30%.

dauletakonfeta: не правильно
dauletakonfeta: ой прости
dauletakonfeta: 5+ , правильно спс
ismuhambetovalmaz: спс
Nozima2612: У меня один вопрос, сможете обьяснить, я не поняла это
Nozima2612: Откуда вы взяли 1000?
Nozima2612: А всё поняла
alihanzhexenov: 1000 от 1-ной тонны
alihanzhexenov: ведь 1т = 1000г
Автор ответа: fokstrot20060803
22

Відповідь:

30%

Покрокове пояснення:

1Т=1000кг

400+300=700

1%=1000:100=10

1000-700=300

300:10=30%

dauletakonfeta: не правильно
dauletakonfeta: спс
dauletakonfeta: правильно
kaldybekamirhan2: правильно
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