Answer:
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Step-by-step explanation:
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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.
For example, x/2 - x/3 = 1 => (3x)/6 - (2x)/6 = 6/6 => 3x - 2x = 6 => x = 6;
Hey There,
16 * 1/6 = 2 2/3
Instead of just 16, we can put 16 over a 1
16/1 * 1/6
Multiply across
16 * 1 / 1 * 6
= 16 / 6
Simplify
2 2/3
- I.A. -
