Answer:
5.714 liters of the 5% solution and 4.286 of the 40%.
Step-by-step explanation:
Let x be the volume of 40% solution and y = volume of the 5% solution.
x + y = 10
0.40x + 0.05y = 0.20(x + y)
From the first equation x = 10 -y so we have:
0.40(10 - y) + 0.05y = 0.20( 10 - y + y)
4 - 0.40y + 0.05y = 2
-0.35y = -2
y = 5.714 liters of the 5%.
and x = 10 - 5.714 = 4.286 liters of the 40% solution.
Step-by-step explanation:
Answer:24 foot and if i am wrong it is 9 so pick one
Step-by-step explanation:
-2.5 and 4
You can get this by factoring to the equation (2x + 5)(x - 4)
The answer is $10
if you add up the total price for each of the items it totals to $40, she has $50 so $50-$40=$10