Answer:
33 1/3 L of the 40% solution, 16 2/3 L of the 25% solution
Step-by-step explanation:
Set up two equations...
Let x represent the number of Liters of the 40% solution
Let y represent the number of Liters of the 25% solution
We need 50 liters total, so
x + y = 50
and we need the 50 L to be 35% solution, so
0.4x = 0.25y = 0.35(50)
Solve the first equation for one variable...
x = 50 - y (subtract y from both sides in equation 1)
Now substitute that value into the second equation...
0.4(50 - y) + 0.25y = 17.5 (x becomes 50 - y, 0.35(50) = 17.5)
Now solve for y...
20 - 0.4y + 0.25y = 17.5
-0.15y = -2.5
y = 16.66666667
y = 16 2/3 L
So we need to plug that into the first equation to find 'x'
x + 16 2/3 = 50
x = 50 - 16 2/3
x = 33 1/3
Answer:
8
Step-by-step explanation:
32-jessica(8)-garret(8)=16, If John eats 8 more cookies, then there are only 8 cookies left.
Answer:
pages
Step-by-step explanation:
Divide the total number of pages by 5 to get how many sets of every 5 pages will contain 2/3 of a page of advertisements.
Multiply this value by 
to get the total number of pages.
pages
Answer:
49.55
Step-by-step explanation:
okay so, what we do is
Get 15% of 23
Get 15% of 32
15% of 23 is 3.45
15% of 32 is 4.80
Now we do
23 - 3.45
32 - 4.80
23 - 3.45 is 19.55
32 - 4.80 is 27.2
This is the part im not 100% on
27.20 + 19.55 is 46.75
6% of 46.75 is 2.80
46.75 + 2.80 is 49.55
Now i dont know if its that way or if you apply the 6% sale tax to each individual item
