ANSWER
My answer is in the photo above
Directions: Solve I think you cross multiply but I'm not really sure where to go from there.
1 answer:
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Answer:
Refer to the explanation.
Step-by-step explanation:
Let's take each one at a time.
1.
To solve for the complement, we simply subtract our markup rate by 100%.
100% - 30% = 70%
Now to solve for the selling price, we use the formula
Selling Price = $123.91
2.
We do the same process with the first number.
100% - 40% = 60%
SellingPrice = $366.67
3.
The same as the first two.
100% - 20% = 80%
SellingPrice = $111.88
4.
Now to solve for the markup rate, we use the formula:
In this case we first need to find the markup. The markup is the difference between the selling price and the cost.
Selling Price = $235.28
Cost = $199.99
Markup = $235.28 - $199.99
Markup = $35.29
Now the we know our markup, we can then solve for the markup rate using the formula.
MarkupRate = 0.1499 x 100 = 14.99% or 15%
5.
Now for the last one, we need to find for the cost. Let's use the selling price formula to find for the cost.
Selling Price = $30.77
Complement = 65% or 0.65
This will then give us.
We multiple both sides of the equation by 0.65 to leave our cost alone.
30.77 x 0.65 = Cost
Cost = $20
Answer: a) 11.26% and b) 50.23%
Step-by-step explanation:
Number of graduates donated to a political campaign n(A) = 91
Number of graduates donated to assist medical research n(B) = 76
Number of graduated to help preserve the environment n(C) = 131
Number of graduated donated to all n(A∩B∩C) = 27
Number of graduates donated to none = 24
Number of graduated donated to political campaign and to medical research n(A∩B) = 32
Number of graduates donated to medical research and to preserve the environment n(B∩C) = 48
Number of graduates donated to a political campaign and to preserve the environment n(C∩A) = 56
Now,
n(U)=n(A)+n(B)+n(C)-n(A∩B)-n(B∩C) -n(C∩A)+n(A∩B∩C)+n(none)
So, What percent of the college graduates donated to none of the three listed causes?
Percentage would be
(b) What percent of the college graduates donated to exactly one of the three listed causes?
Exactly one = 91+76+131-2(32-56-48)+3(27)=107
Percentage would be
Hence, a) 11.26% and b) 50.23%