In a glass case there are 21 beetles out of 27 insects . What is the ratio of beetles to insects?
Responses
A 1 : 91 : 9
B 1 : 71 : 7
C 7 : 97 : 9
D 9 : 7
: 27
The ratio of beetles to insects is 21:27, which can be simplified to 7:9.
Therefore, the answer is C) 7:97:9.
To find the ratio of beetles to insects, we need to determine the number of beetles and the number of insects separately.
Given that there are 21 beetles out of 27 insects, we can find the ratio as follows:
Number of beetles = 21
Number of insects = 27
Now we need to simplify the ratio by dividing both numbers by their lowest common factor, which is 3 in this case.
Number of beetles divided by 3: 21 ÷ 3 = 7
Number of insects divided by 3: 27 ÷ 3 = 9
The simplified ratio is 7:9, which means for every 7 beetles, there are 9 insects.
So, the correct ratio is C) 7:9.
To find the ratio of beetles to insects, you need to determine the number of beetles and insects separately.
Given that there are 21 beetles out of 27 insects, the ratio can be written as:
Beetles : Insects
Substituting the values, we get:
21 : 27
To simplify this ratio, we can divide both numbers by their greatest common divisor, which in this case is 3:
21 ÷ 3 : 27 ÷ 3
This simplifies to:
7 : 9
Therefore, the ratio of beetles to insects is 7 : 9, which corresponds to option C.