Answer:
The Answer is 20
Step-by-step explanation:
let's take wife's age as x
given,
(40 + x)/2 = 30
40 + x = 30*2
x = 60 - 40
x = 20
Answer:
there are 6 vertices show in the diagram
It’s already a fraction so it cannot be simplified anymore
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
