Question 1196702
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I'll use the Alligation method as described on slide 6 from this link here
<a href="https://www.slideserve.com/lixue/alligation">https://www.slideserve.com/lixue/alligation</a>


The target is 69%


The gap from 25% to the target is 69-25 = 44
The gap from 80% to the target is 80-69 = 11


The ratio 44:11 reduces to 4:1


We'll need 4 times as much of the 80% solution compared to the 25% solution


x = amount of 25% solution
4x = amount of 80% solution
x+4x = 10 mL of solution total
5x = 10
x = 10/5
x = 2
10-x = 10-2 = 8


Answers:
2 mL of the 25% solution
8 mL of the 80% solution
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