Предмет: Математика, автор: tasnim23092004

1)
m)
n)
нення ванны?
Волк съедает овцу за 6 часов, тигр съедает ее в два раза быстрее, а лев-в три
раза быстрее. Выясните, за сколько часов трое животных съедят овцу.
Оспан и Самат заготовят дрова на зиму за 10 дней, Марат и Самат -за 15 дней, а
Марат и Оспан за 18 дней. За сколько дней Марат заготовит дрова на зиму?
Оспан и Самат заготовят дрова на зиму за 10 дней, Марат и Самат -за 15 дней, а
Марат и Оспан - за 18 дней. За сколько дней Самат заготовит дрова на зиму?
Айбек ремонтирует велосипед за 20 минут. Ансар - за 12 минут, а Чингиз - за
15 минут. За сколько минут они отремонтируют велосипед, если будут
работать совместно?
o)
Три трубы заполняют бассейн. Первая и вторая труба заполнят бассейн за 2
часа, вторая и третья - за 3 часа, первая и третья - за 4 часа. За сколько часов
заполнит бассейн третий кран?
Задание на дом
Срочно!!!

Приложения:

Ответы

Автор ответа: filipcuksasa02
1

Відповідь:

1. 1/6+1/3+1/2=1+2+3/6=6/6=1

2. 1:1/18=1*18/1= за 18 дней на рубит дрова Дима

. 1:2/45=1*45/2=22 1/2= за 2,5 дня нарубит дрова Олжас

. 1:1/90=1*90/1= за 90 дней на рубит дрова Антон

3. Не знаю

4. Третья труба заполнит бассейн за 2.4 часа, что округляется до 2 часов и 24минуты ОТВЕТ 24часа

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