Question

Which all of the following is equivalent to rational numbers to $\frac{2}{5}$

• A.
  $\frac{4}{15}$
• B.
  $\frac{4}{10}$
• C.
  $\frac{6}{15}$
• D.
  $\frac{8}{20}$

Answer 1

Answer: (B), (C), (D)

The correct options are
B
$\frac{4}{10}$
C
$\frac{6}{15}$
D

$\frac{8}{20}$
To write equivalent rational number, we just need to multiply or divide the numerator and denominator by same number.
i.e, when $\frac{2}{5}$ is multiplied with 2 in both numerator and denominator, we get $\frac{2\times 2}{5\times 2}$ = $\frac{4}{10}$
Similarly by multiplying with 3, we get $\frac{6}{15}$
and by 4, we get $\frac{8}{20}$