All the pairs of ratios that form a proportion are;
B. 7/9, 28/36
C. 14/18, 21/27
What is Proportional?
Any relationship that is always in the same ratio and quantity which vary directly with each other is called the proportional.
Given that;
All the ratio are,
A. 1/6,4/20
B.7/9 ,28/36
C. 14/18 ,21/27
D. 30/80 , 6/18
Now,
Solve the ratio in simplest form as;
A. 1/6, 4/20
1/6 = 1 / 6
And, 4 / 20 = 1 / 5
Thus, It is not form a proportion.
B. 7/9, 28/36
7 / 9 = 7 / 9
And, 28 / 36 = 7 / 9
Thus, It is form a proportion.
C. 14/18 ,21/27
14 / 18 = 7 / 9
And, 21 / 27 = 7 / 9
Thus, It is form a proportion.
D. 30/80 , 6/18
30 / 80 = 3 / 8
And, 6 / 18 = 1 / 3
Thus, It is not form a proportion.
Therefore, All the pairs of ratios that form a proportion are;
B. 7/9, 28/36
C. 14/18, 21/27
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