Question

Find the value of X of 42:12 :: 72 : x

Answer 1

Answer:

20.514..............................

Answer 2

$42 : 12 : :72 : x$

$\rightarrow \: 42 \times x = 72 \times 12( \therefore \: ab = bc)$

$\rightarrow \: x = \frac{72 \times 12}{14}$

$\rightarrow \: x = \cancel \dfrac{864}{14} = \dfrac{432}{7}$

$\rightarrow \: x = 61.7 \approx$