Movie studio keeps 240 dresses in its wardrobe for historical films. 3/5 of them can be used for movies that take place in 1700s
and 15% of them used for movies in civil era. What percent of the dresses are for films in 1700s?
1 answer:
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Answer:
-42
Step-by-step explanation:
directly means y = kx where k is a constant. you have to first find the constant.
now you have your equation
so you simply plug in x and find y
Answer:
The number of cows on Justin's farm is <u>18</u>.
Step-by-step explanation:
Given:
The only animals on farmer Justin's farm are cows and chickens.
Justin counts a total of 45 heads and a total of 126 feet.
Now, to find the number of cows on Justin's farm.
Let the number of cows be
And the number of chickens be
So, the total number of heads are:
......(1)
As, the feet of chicken are 2 and the cows are 4.
Thus, total number of feet are:
Substituting the value of from equation (1) we get:
<em>Subtracting both sides by 90 we get:</em>
<em>Dividing both sides by 2 we get:</em>
<em>The number of cows = 18.</em>
Therefore, the number of cows on Justin's farm is 18.