Answer:
The scientist must use 10 ounces of Solution A and 40 ounces of Solution B.
Step-by-step explanation:
Since a scientist has two solutions, which she has labeled Solution A and Solution B, each containing salt, and she knows that Solution A is 40% salt and Solution B is 90% salt, and she wants to obtain 50 ounces of a mixture that is 80% salt, to determine how many ounces of each solution should she use the following calculation must be performed:
100 x 0.9 + 0 x 0.4 = 90
90 x 0.9 + 10 x 0.4 = 85
80 x 0.9 + 20 x 0.4 = 80
50 x 0.8 = 40
Therefore, the scientist must use 10 ounces of Solution A and 40 ounces of Solution B.
Answer:
-2/3, I'm Sorry If The Answer Is Wrong, However I'm Trying
Step-by-step explanation:
Answer:
the first bullet, M+0.15m
Step-by-step explanation:
Think about it this way:
M is the total amount of money you pay for the meal.
0.15m is the tax calculation, 0.15 x M= a 15% tip
Because a tip means added money on top of the total cost of the meal, you have to add both of them together.
Answer:
2
Step-by-step explanation:
