My recent winter holidays were a lot of fun. I tried to visit as many places as I could and to do a lot of different things. Even though the weather wasn't very nice, it didn't make me feel sad. I went to the mall and to the skating-rink with my family and friends. It's always interesting to learn something new, so I also visited the movies and watched some great films. And then, of course, there were New Year and Christmas, which are both my favourite holidays. We had a gorgeous Christmas-tree decorated with toys and Christmas lights. On the first day of new year I got many presents from my family and relatives. After all, it was just great to take some time off from school and to sleep till noon. I really enjoyed my winter holidays.
1-й день - 40% = 40/100 = 2/5 всей капусты
2-й день - 60% = 60/100 = 3/5 остатка
3-й день - 96 т
Всего - (целое = 1 или 100%) ?
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.
1) 100% - 40% = 60% - оставшаяся часть капусты;
2) 60% от 60% = (60·60)/100 = 3600/100 = 36% - отправлено во второй день;
3) 100% - (40% + 36%) = 100% - 76% = 24% - часть капусты, равная 96 т;
4) Находим целое по его части:
96 : 24 · 100 = 4 · 100 = 400 т - столько капусты было на базе.
.
1) 1 - 2/5 = 3/5 - оставшаяся часть капусты;
2) 3/5 · 3/5 = 9/25 - отправлено во второй день;
3) 2/5 + 9/25 = 10/25 + 9/25 = 19/25 - отправлено за два дня;
4) 1 - 19/25 = 6/25 - часть капусты, равная 96 т;
5) Находим целое по его части:
96 : 6/25 = 96 · 25/6 = 16 · 25 = 400 т - столько капусты было на базе.
ответ: 400 т.
1) узнаем сколько км он проехал во второй день: 250-50=200 км
2) За два дня он проехал: 250+200=450 км.
3) скорость автомобиля: 450/8=56,25 км в чам
4) время в первый день 250/56,25=4,44 ч
5) второй день: 8-4,44=3,56 ч