N equals <em>416</em>
Hope this helps!
Answer:
3.75 quarts, rounded to 3.8 quarts
Step-by-step explanation:
3 quarts of solution is 10% antifreeze, so 0.3 quarts are already antifreeze, and 2.7 quarts are not.
a(the antifreeze we already have)+x(what we're going to add)= 1.5*2.7
Let me explain. If we have 60% antifreeze, 40% is not. 60/40=1.5
Substitute a for 0.3
0.3+x=4.05 Subtract 0.3 from both sides
x=3.75
Answer:
Step-by-step explanation:
Given
Required
From the question, we have:
So, we have:
Open bracket
Integrate
Substitute 0.7 and 0.3 for x
Using a calculator, we have:
Remove brackets
