Answer:
- 26 ounces of 55% solution
- 104 ounces of 80% solution
Step-by-step explanation:
Let x represent the quantity of 80% solution. Then 130-x is the amount of 55% solution. The total amount of salt in the mix is ...
0.80x +0.55(130 -x) = 0.75·130
0.25x = 0.20·130 . . . . . . . subtract 0.55(130)
x = 0.20/0.25(130) = 104
130-x = 26
She should use 26 ounces of 55% solution and 104 ounces of 80% solution.
Well you could multiply both fractions by 2 (and get 6/8x4/6) and 3 (which would be 9/12x6/9) both of which would give you 1/2 just like 3/4x2/3 would. Or you could use 2/5x5/4 and 1/3x3/2 both which would also give you half :) hope this helps
-267 - (-855) is the same as
-267 + 855 or
855 - 267
855 - 267 = 588
Hope this helped!
I think it’s the second one