Предмет: Математика, автор: НяшкаШоколадка

Ответьте!
Я вас прошу ответьте а то сейчас мой вопрос будет уходить дальше и дальше, но у меня не хватает баллов опять писать так что я вас прошу ответьте на мой вопрос! Вернее задачу!
На орошение поля площадью 30 га одной машине требуется 3 ч, а другой - на 2 ч больше. За какое время смогут оросить поле площадью 80 га обе машины, работая одновременно?

Ответы

Автор ответа: miron2077
0
30:3=10га первая в час
3+2=5часов надо второй машине
30:5=6га в час вторая машина
10+6=16га в час машины вместе
80:16=5 часов  за 5 часов поле 80га оросят обе машины, работая вместе

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Mackenzie Airport Welcomes First-Time Fliers!

Welcome to Mackenzie Airport, designed to get your journey off to the right start. Whether you’re flying first class, business class, or (1)_______________ class, we aim to give you efficiency and comfort. For first-time flyers, we‘ve prepared this leaflet to help you on your way.



When you arrive at the (2)________________ you’ll find plenty of (3)______________for your luggage. Once inside the spacious departure lounge there are over fifty (4)________________ where your ticket will be checked and you’ll be given a (5)_______________. Your luggage will be weighed and put on a (6)_______________ which takes it to the plane. Please note there is a weight limit and any (7)_____________ will have to be paid for. You can keep one small bag with you and take it onto the plane as (8)__________________.



You should then go through a (9)______________ to make sure you are not carrying any dangerous or illegal items and (10)_______________, where an (11)______________ will look at your passport. Now you’ll find yourself in the comfort of our modern air-conditioned (12)________________. While you’re waiting for your flight to be called, why buy some cheap (13)______________ goods - alcoholic drinks, perfume, electrical goods, or souvenirs?



Soon you’ll hear an (14)______________ or see (15)_______________ that your flight is (16)______________. It will also tell you which (17)_____________ to go to. Here you’ll be helped by a ground steward and on the plane a (18)__________ will direct you to your seat. Bon voyage!



On your return to Mackenzie Airport we try to offer the same efficient service. After you’ve passed through (19)_______________, your luggage will be waiting on the moving (20)_______________ in the (21)_______________ hall. Then pass through (22)_________________ where you should take either the (23)______________, if you have nothing to declare, or the red channel, if you have to pay (24)____________. Once inside the arrivals lounge, lifts and (25)___________ will take you to all major transport services.



On behalf of everyone at Mackenzie Airport, I wish you a very pleasant journey.​