We have solutions of 20% acid and 40% acid.
We need 60 liters of 40% acid.
"t" is liters of 20% and "f" is liters of 40%
We have to set up two equations:
A) t + f = 60
B) .20t + 1.0f = (60*.40)
Multiplying equation A) by -.2
A) -.2t -.2f = -12 then adding that to B)
B) .2t + f = (24)
.8f = 12
forty per cent volume = 15 liters
A) t + f = 60
Twenty per cent volume = 45 liters
Source:
http://www.1728.org/mixture.htm
Answer:
For 2/5=0.4 For 40/100 is also 0.4
Step-by-step explanation:
Answer: $2,185
to find the amount the business paid in taxes, you have to find 9.5% of $23000
9.5% is 0.095 as a decimal
multiply 23000 by 0.095 to get 2185
therefore, the business paid $2,185 in taxes last year
hope this helps!
Answer: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100