Let t, f, and s be the amount of 25%, 40%, and 60% solutions used.
We are told s=3f. The general equation is:
100(0.25t+0.4f+0.6s)/(t+s+f)=45, and using s=3f we have:
(0.25t+0.4f+1.8f)/(t+4f)=0.45
(0.25t+2.2f)/(t+4f)=0.45
0.25t+2.2f=0.45t+1.8f
0.25t+0.4f=0.45t
0.4f=0.2t
t=2f, remembering that s=3f, will allow us to solve for f
t+s+f=60, using t and s from above
2f+3f+f=60
6f=60
f=10 L then
s=3f=30 L and t=2f=20L
So 20L of 25%, 10L of 40%, and 30L of 60% acid solutions need to be mixed to make 60L of 45% acid solution.
3/2. you but as y over x and subtract the y’s then the x’s so -2-4 over -1-3 = -6/-4= 3/2
The gcf is 14 because 14x1 is 14 and 14x3 is 42
Take all the temperatures and add them together then divide that by five and you get 36.3
So the answer is 36.3
Answer:
$5,909.97
Step-by-step explanation:
We will use the compound interest formula for this problem as shown below:
<em>P = initial balance</em>
<em>r = interest rate (decimal)</em>
<em>n = number of times compounded annually</em>
<em>t = time</em>
<em />
First, change 3.6% into a decimal:
3.6% -> 
-> 0.036
Now plug in the values:
After 2 years, the balance would be $5,909.97
