Answer: 10 L of pure and 20 L of 10%
<u>Step-by-step explanation:</u>
<u> Qty </u> <u> % </u> <u> Qty * %</u>
Solution 1: x 1.00 1(x) = 1.00x
Solution 2: <u>30 - x </u> 0.10 0.10(30 - x) = <u>3 - 0.10x</u>
Total: 30 0.40 30(0.40) = 3 + 0.90x
⇒ 12 = 3 + 0.90x
<u> -3 </u> <u>-3 </u>
9 = 0.90x
<u> ÷ 0.90 </u> <u>÷0.90 </u>
10 = x
Solution 1: x = 10
Solution 2: 30 - x = 30 - 10 = 20
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Answer: 16
<u>Step-by-step explanation:</u>
Constraints: x + 3y ≤ 6
x + y ≤ 4
x ≥ 0
y ≥ 0
Vertices can be found by graphing the above equations or by solving the system of equations. Vertices: (0, 2), (3, 1), and (4, 0)
Objective function: F = 4x + 3y
(0, 2): F = 4(0) + 3(2)
= 0 + 6
= 6
(3, 1): F = 4(3) + 3(1)
= 12 + 3
= 15
(4, 0): F = 4(4) + 3(0)
= 16 + 0
= 16
The maximum is 16, which occurs when x = 4 and y = 0
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Answer: A = 23,000 B = 14,100 C = 8,900
<u>Step-by-step explanation:</u>
Qty: A + B + C = 46,000 where A = B + C
x + x = 46,000
2x = 46,000
x = 23,000
Section A: 23, 000 seats
Section B: 23,000 - y
Section C: y
Cost: 35A + 20B + 15C = 1,220,500
35(23,000) + 20(23,000 - y) + 15(y) = 1,220,500
805,000 + 460,000 - 20y + 15y = 1,220,500
1,265,000 -5y = 1,220,500
<u> -1,265,000 </u> <u>1,265,000 </u>
-5y = -44,500
<u> ÷-5 </u> <u> ÷-5 </u>
y = 8,900
Section B: 23,000 - y = 23,000 - 8.900 = 14,100
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