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Natasha_Volkova [10]
3 years ago
6

Brainliest for best answer

Mathematics
1 answer:
Ipatiy [6.2K]3 years ago
6 0
X in litres is 67% herbicide
y in litres is 46% herbicide
{x+y=42
{0.67x+0.46y=42*0.55

{67x+46y=2310
{46x+46y=1932

21x=378
x=18 litres

A. She need to use 18L

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