Question

The length of a snake is 10 cm and that of a crocodile is 2 m. Pick the correct statement.

• A. The ratio of length of snake to crocodile is 5:1
• B. The ratio of length of snake to crocodile is 1:20
• C. Crocodile is 20 times longer than snake
• D. Both B & C

Answer 1

The correct option is B

The ratio of length of snake to crocodile is 1:20

A ratio is a method of comparing two quantities having the same unit, so we have to convert both the given lengths into metres or centimetres.
We know that, 1 m = 100 cm

$\Rightarrow$ 2 m = 200 cm
Hence, the ratio of the length of the snake to that of the crocodile would be
= $\frac{lengthofthesnake}{lengthofthecrocodile}$
= $\frac{10}{200}$
= $\frac{1}{20}=1:20$.

Therefore, the crocodile is 20 times longer than the snake.