Предмет: Математика, автор: ксяяяя

Саша пригласил Петю в гости, сказав, что живет в восьмом подъезде в квартире № 468, а этаж сказать забыл, Подойдя к дому, Петя обнаружил, что дом двенадцатиэтажный. На каком этаже живет Саша? (На каждом этаже число квартир одинаково, номера квартир в доме начинаются с единицы).

Ответы

Автор ответа: DariosI
0
1) 7*12 = 84 этажа в первых 7-ми подъездах
2) 468:84=5 4/7 ≈5 квартир на этаже, поскольку число квартир целое, а №468 в 8-ом подъезде, округляем в меньшую сторону
3) 5*84= 420 квартир в первых 7-ми подъездах
4) 468 - 420 = 48 квартир в подъезде Саши надо подняться
5) 48:5 =9, 6 ≈10 этаж у Саши (поскольку получается 9,6 количество этажей целое, округляем в большую сторону)

Ответ на 10 этаже живет Саша
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