Question

Va rooog ma puței ajuta!! ​

Answer 1

Răspuns:

20 tone

Explicație pas cu pas:

Notam ciment = a

Pietris = b

Nisip = c

Apa = d

a = 2 tone = 2000 kg

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a/3 = b/7 = c/18 = d/2

2 tone/3  = b/7  => b = (2·7)/3 = 14/3 tone = 4,(6) tone

2 tone/3 = c/18 => c = (2·18)/3 = 2·6 = 12 tone

2 tone/3 = d/2 => d = (2·2)/3 = 4/3 = 1,(3) tone

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Cantitatea totala de amestec =

2 tone + 4,(6) tone + 12 tone + 1,(3) tone = 20 tone