Предмет: Математика, автор: 123456728

плиззззззззз #5..............

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Автор ответа: AlinaSafonova
1
50 + 30 = 80 тенге стоят 1-а открытка и один конверт
1600 / 80 = 20 штук
20* 50 = 1000 тенге открытки
20 * 30 = 600 тенге конверты
ответ по 20 штук
Автор ответа: Hristina111
1

50+30=80 (шт) общее количество конвертов и открыток

1600/80=20 (шт) количество конверта или открытки

50*20=1000 (тенге) выручили за открытки

30*20=600 (тенге) выручили за конверты

Если помогла поставь палиц в верх
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