Jbullon119
18.11.2020 •
Mathematics
john needs 20 grams of a 54% acid solution for his science project. His school's science lab has bottles of 30% solution and bottles of 60% solution how much of each should he use
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Ответ:
4g, 16g
Step-by-step explanation:
By the way, I also go to RSM...
Equation: 30x+60(20-x)=54*20
Solve:
30x+1200-60x=54*20
-30x+1200=54*20
-30x+1200=1080
-30x=1080-1200
30x=1200-1080
30% solution = x = 4g
60% solution = 20-4 = 16g
Ответ: