Answer:
a and b
Step-by-step explanation:
just trust =) ive done this before
Answer:
The store owner must use 18 pounds of the 45 ¢ pasta.
Step-by-step explanation:
Given that a store owner has 12 pounds of pasta worth 70 ¢ a pound, and she wants to mix it with pasta worth 45 ¢ a pound so that the total mixture can be sold for 55 ¢ a pound, to determine how much of the 45 ¢ pasta must she use, the following calculation must be performed:
100 x 0.7 + 0 x 0.45 = 70
90 x 0.7 + 10 x 0.45 = 67.5
50 x 0.7 + 50 x 0.45 = 57.5
40 x 0.7 + 60 x 0.45 = 55
40 = 12
60 = X
60 x 12/40 = X
720/40 = X
18 = X
Thus, the store owner must use 18 pounds of the 45 ¢ pasta.
In percentage problems, the term rate refers to the actual percentage itself. Let's look at an example. If you have a principal amount of 1000 and you will be getting a yearly interest of 5%, then the rate is the 5%. We refer to it as the interest rate. So if you are looking for the rate in any percentage problem, then you just have to look for the number that has the percentage symbol. The one with the percentage symbol is always the rate.
Answer:
x = 5/6
Step-by-step explanation:
-12x=-10
Divide each side by -12
-12x/-12 = -10/-12
x = 5/6
