1) As a start you have 100% of contaminants: so
the 1st filtration you removed 70% & remaining 30%
the 2nd filtration you removed 70% of the 30% (=21%) & remaining (30%-21%)
or 9%
the 3rd filtration removed 70% of the 9% (=6.30%) & remaining (9%-6.3%)
or 2.7%
the 4th filtration removed 70% of the 2.7% (1.89%) & remaining (2.7%-1.89%)
or 0.81%
Follow the same logic for all remaining question.
Answer:
85
Step-by-step explanation:
got it right
Answer:
30
Step-by-step explanation:
3mn=3x5x2=30
Answer:
$27
Step-by-step explanation:
I really don't know but my beest guess would be $27 to get back to $150.
