Предмет: Математика, автор: dasha1716

Как решить задачу,в комплект учебных пособий по математике входят учебник и две рабочие тетради.на класс купили 28 комплектов,заплатив 3360 рублей.по какой цене купили учебники ,если каждая рабочая тетрадь стоит 20 рублей?


dasha1716: ну как?????
dasha1716: ответьте мне нужно прямо сейчас

Ответы

Автор ответа: Юльчик704003
5
1) 3360:28=120 (руб.) стоит 1 комплект
2) 2х20=40 (руб.) - стоимость 2-х рабочих тетрадей
3) 120-40=80 (руб.)
Ответ: учебник стоит 80 рублей 

dasha1716: Юля,спасибо тебе большое!!!
Юльчик704003: Не за что,рада стараться!
dasha1716: а тебе сколько лет?
Юльчик704003: 12
dasha1716: а какая краткая запись?
dasha1716: ❤️❤️❤️можешь пожалуйста подсказать)
Юльчик704003: Увы но нет,извини
dasha1716: ладно,ну всё равно спасибо тебе большое!
Автор ответа: dovgopolov1977
1
20*2=40 р- заплатили на рабочие тетр в каждом комплекте
40*28=1120р.- зпалптили за все рабочие тетради
3360-1120=2240р.- заплатили за все книги
2240:28=80р.- ЗАПЛАТИЛИ ЗА 1 УЧЕБНИК.
Ответ: 80 рублей
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