Question

Which of the following ratios , form a proportion ?

• A. $2:5$and $5:7$
• B. $4:11$ and $11:4$
• C. $5:6$ and $25:30$
• D. $7:13$ and $9:16$

Answer 1

The correct option is C

$5:6$ and $25:30$

For the ratios to be in proportion , they should be equal

(a) $\frac{2}{5}\ne \frac{5}{7}$, so it is not the correct answer.

(b) $\frac{4}{11}\ne \frac{11}{4}$, so it is not the correct answer.

(c) $\frac{25}{30}=\frac{5}{6}(DividingNumeratorandDenominatorby5)$

$\frac{5}{6}=\frac{5}{6}$

So, Option (c) is the correct answer .

(d) $\frac{7}{13}\ne \frac{9}{16}$, so it is also not the correct answer.