Предмет: Математика, автор: линочка2015

в красную книгу по северо-казахстанской области занесено 12 видов хищников и столько же видов грызунов . число видов парнокопытных составила 1/3 от числа видов грызунов и в 2 раза больше , чем зайцеобразных , а число видов видов рукокрылых составила 50 процентов от числа зайцеобразных. сколько видов парнокопытных ,зайцеобразных и рукокрылых занесено в красную книгу по северо-казахстанской области? решите плиз умоляю

Ответы

Автор ответа: Аноним

323

12:3 = 4 вида парнокопытных.
4:2 = 2 вида зайцеобразных.
2*50% = 2*0,5 = 1 вид рукокрылых.

shitickownicko: число видов парнокопытных составила 1/3 от числа
видов грызунов и в 2 раза больше , чем зайцеобразных

shitickownicko: БОЛЬШЕ ТО ЕСТЬ УМНОЖАТЬ!

shitickownicko: умножить на 1/2 или на 0,5

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