Ответ учителя по предмету Математика
Узнаём сколько км пройдёт 1 поезд за 4 часа:
63*4=252
И узнаем сколько прошёл 2 поезд:
564-252=312
И теперь узнаём скорость 2 поезда:
312:4=78
Ответ: скорость 2 поезда 78 км/ч.
Узнаём сколько км пройдёт 1 поезд за 4 часа:
63*4=252
И узнаем сколько прошёл 2 поезд:
564-252=312
И теперь узнаём скорость 2 поезда:
312:4=78
Ответ: скорость 2 поезда 78 км/ч.
Похожие вопросы от пользователей
10) Ann’s hair was dirty Now it is clean. She (to wash) it. 11) We (to sail) around the islands this time next month. 12) It was Keith’s first driving lesson. He (to be) very nervous and (not to know) what to do.He never (to drive) before. 13) I saw Carol at the party. She (to wear) a really beautiful dress. 14) Every morning I (to get up) at 7o’clock and (to go) for a swim in the lake before breakfast. 15) By next Christmas we (to be) here for 8 years. 16) Do not lend him your car. I know him. He (to crash) it. 17) You (to hear) the storm last night? 18) The river (to flow) very fast today-much faster than usual