Предмет: Математика, автор: saidhamid601

Найдите 20% от 16,8 *
2.Найдите число, 15% которого составляет 60 *
3.Решите задачу: В железной руде содержится 45 % железа. Сколько тонн железа содержится в 380 т руды?Ответ записать без единиц измерения *

rafaelsajhiev1: 1. 3.36
2.9
3.171
4.6500 гаэ

Ответы

Автор ответа: УчихаСaске

Ответ:

1.3,36

2.400

3.17 100%

Пошаговое объяснение:

1. 20% от 16,8

20%=0,2

16,8×0,2=3,36

2.15%=60

15%=0,15

60÷0,15=400

3.45%×380=17 100%

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