<span>Dr. Graham currently has two acid solutions.
60% acid AND 20% acid </span>
Dr. Graham needs 30 L of a 50% acid solution
We set up 2 equations in which s = 60% acid and t = 20% acid
A) s + t = 30
B) .60s + .20t = (.50 * 30)
We multiply equation A by -.20
A) = -.20s -.20t = -6 then we add it to B)
B) .60s + .20t = 15
.40s = 9
s = 22.5
t = 7.5
So, she needs to mix 22.5 liters of 60% acid with 7.5 liters of 20% acid.
Source:
http://1728.org/mixture.htm
Answer:
0.286
Step-by-step explanation:
2/7 as a decimal is 0.28571429
0.28571429 rounded to thousandths place = 0.286
hope this helps!!!
If i remember correctly then the expanded form of 632 is
600+30+2
hope this helped ^^
Answer:
while answering this my brain stop working so i had to think fast so i remove my brain put some soil inside to light it up problem not solve im an alpha kid
GS=5000 is the awnser too this
