Question

Which of the following option represent the decimal $0.12$

• A.
• B.
• C.

Answer 1

The correct option is B

Total number of squares = 100

Number of colored squares = 21

21 are colored out of 100 squares $=\frac{21}{100}\Rightarrow \text{represents twenty one hundredths}=0.21\to \text{represents twenty one hundredths}$
Total number of squares = 50

Number of colored squares = 6

6 are colored out of 50 squares $=\frac{6}{50}=\frac{2\times 3}{2\times 25}=\frac{3}{25}=0.120.12\to \text{represents twelve hundredths}$
Total number of squares = 25

Number of colored squares = 5

5 are colored out of 25 squares
$=\frac{5}{25}=\frac{1\times 5}{5\times 5}=\frac{1}{5}=0.2$
$0.2\to \text{two tenths}$
So, decimal number is $0.2$

$\therefore$ Option "b" is correct