Помогите решить задачу, пожалуйста. Магазин снизил цену с дивана с 31370 рублей до 19310 рублей. Соответствует ли это снижение рекламной скидке 40%?

1 Which goods does you office sell? Whom does your office sell a lot of different goods? How many different goods does your office sell?2 Who usually receives businessmen at 10.30? When does your director receive businessmen? Whome does your director receive at half past ten?3 Who must send three enquiries to foreign firms today? How many enquiries do your engineers must dend to foreign firms today? When do your engineers must send three enquiries to foreign firms? What do your engineers must send to foreign firms today? Whom must your engineers send three enquiries today?4 Who usually brings the mail to ou director at 9 o`clock? What does the secretary usually bring to our director at 9 o`clock? Whom does the secretary usually bring the mail at 9 o`clock? What time does the sectretary usually bring the mail to our director? 5 What does our country buy from GB? Which equipment does our country buy from GB? Where does our country buy a lot of different equipment?

31370 руб. = 100%. 40% = 0,04. 31370-0,4*31370 = цена с рекламной скидкой = 18822 руб. Реальная сниженная цена больше рекламной, следовательно, скидка была меньше 40%.

решений данная задача имеет несколько. вот одна из них:снизила с 31370 р. , значит эта стоимость 100 %. если скидка 40 % , то 19310р.  это 60%.     это значит что 60% от 31370р. это 19310р.  ну так проверим 31370*60%/100%=18822а  18822(не равно)19310   значит не соответствует.