Вопрос школьника по предмету Математика
решите задачи и напишите для них условия
1.В мастерской из двух кусков материи сшили одинаковые палатки для туристов.В первом куске было 84м материи,а во втором 60м .Сколько палаток сшыли из кождого куска ,если известно ,что из первого куска сшили на 2 палатки больше?
2.Теплоход и катер отошли одновременно от одной пристани в противоположных направлениях.Средняя скорость теплохода 550м/мин,а средняя скорость катера на 200м/мин меньше.Какое расстояние будет между ними через 3ч.?
Ответ учителя по предмету Математика
Задача (1)
1) 168-120=48-метров, первый кусок больше второго
2) 48_4=12-требуется метров материи на одну палатку
3) 168_12=14-палаток из первого куска
4) 120_12=10-палаток из второго куска
Задача (2)
1)550-200=350 — скорость катера
2). 550+350=900 — скорость удаления
3). 900*180=162000 м = 162км
Ответ: расстояние в 162 км будет между катером и теплоходом через три часа.
Надеюсь я тебе помогла..
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