Сандар жубын жаз. Моделын салып, оларды салыстыр

Пошаговое объяснение:

There is bath in the bathroom

There is mirror in the bathroom

There is armchair in the hall

There is carpet in the hall

There is sofa in the hall

There are curtains in the hall

There are cushions in the hall

There is painting in the hall

There is cooker in the kitchen

There is chair in the kitchen

There is table in the kitchen

There is sink in the kitchen

There is fridge in the kitchen

There are pillows in the bedroom

There is desk in the bedroom

There is poster in the bedroom

There is wardrobe in the bedroom

There is bookcase in the bedroom

There are stairs leading from the first to the second floor

Бассейн=1;
Заполнить надо 1/2 бассейна;
1 кран в час= 1:4= 1/4
2кран в час= 1:6=1/6

1)) 1/4+1/6=(1•3)/(4•3)+ (1•2)/(6•2)= 3/12+ 2/12= 5/12 заполнят два крана в час

2)) 1: 5/12= 12/5= 2 2/5ч= 2,4ч или 2ч и 0,4•60=24 мин это весь бассейн

3)) 2/4• 1/2= 2,4:2= 1,2ч = 1ч и 0,2•60=12 мин заполнят вдвоём половину бассейна

Ответ: наполовину бассейн заполнят два крана за 1,2часа

Или так
1)) 1/4+ 1/6= 3/12+ 2/12= 5/12 заполнят в час два крана

2)) 1/2:5/12= 1/2• 12/5= 1/1• 6/5= 6/5= 1 1/5ч= 1,2ч= 1ч и 0,2•60=12 мин

Ответ: наполовину заполнят два крана бассейн за 1,2часа