Let there be x quarts of the 20% salt solution, and (25 - x) quarts of the 80% salt solution.
Then the total amount of salt in the 20% portion would be 0.2x, while that from the 80% portion would be (0.8)(25 - x). This would have to total up to (0.44)(25) in the final solution, so the equation is:
0.2x + 0.8(25 - x) = (0.44)(25)
-0.6x + 20 = 11
x = 15 quarts of the 20% salt solution
25 - x = 10 quarts of the 80% salt solution
Step-by-step explanation:
(10-0) ÷ (27-0) = x ÷ y
10 ÷ 27 = x ÷ y
27x = 10y
2,7x = y
The third one
Answer:
113.142 mm
Step-by-step explanation:
Easy.
Formula:
pi x radius x radius
Solution: 3.141592654 or 22/7 for pi
22/7 x 6 x 6 = 113.142 mm
Answer:
£280
Step-by-step explanation:
238/0.85
