Answer:
60 liters of 20% solution & 20 liters of 60% solution
Step-by-step explanation:
80*0.3=.2x+0.6(80-x)
24=0.2x+48-0.6x
-24=0.2x-0.6x
-24=0.4x
24=0.4x
60=x
Hope this helps!! This is step by step btw!
Answer:
37.6991 L ft
Step-by-step explanation:
y=-2x+4
y=-8x-6
y=3x+5
y=x-10
y=4x-4
Step-by-step explanation:
these questions require a series of equations in order to solve but if you are asking for them to be rearranged
X/2 x .09 =y
x/2 x .11= z
y + z = 420
((x/2) x .09) + ((x/2) x .11) = 420
.09x/2 + .11x/2 = 420
.2x/2= 420
.1x=420
x=4200
Plug that value back into the originals to check
4200/2 x .09 = 189
4200/2 x .11 = 231
-------
420
She invested 4200 dollars
1490/4 =372.5................