Question

Marnie conducted a survey of the cats in four shelters and wrote the following observations:

4 of the 18 cats in Shelter 1 were black
13 of the 24 cats in Shelter 2 were black
12 of the 20 cats in Shelter 3 were black
18 of the 25 cats in Shelter 4 were black

Based on the survey, which shelter had the greatest percentage of black cats?

A. Shelter 1
B. Shelter 2
C. Shelter 3
D. Shelter 4

Answer 1

D.

Explanation:

shelter 1 had 4/18 black, around 17%

2 had around 60%

3 had exactly 60%

and 4 had 72%

Answer 2

Option D

Answer:

Shelter 4 has the highest percentage of black cats with 72%.

Solution:

Let us find the percentage of cats in each shelter of Marnie

Step 1:

4 of the 18 cats in Shelter 1 were black

This can be written as

`(4)/(18)` = 0.22

Step 2:

13 of the 24 cats in Shelter 2 were black

`(13)/(24)` = 0.54

Step 3:

12 of the 20 cats in Shelter 3 were black

`(12)/(20)` = 0.60

Step 4:

18 of the 25 cats in Shelter 4 were black

`(18)/(25)` = 0.72

Result:

Therefore we can conclude Shelter 4 has the highest percentage of black cats with 72%.