If 40% of a number is equal to two-third of another number, what is the ratio of first number to the second number?
2 : 5
3 : 7
5 : 3
7 : 3
Explanation:
Let 40% of A = $\dfrac{2}{3}B$
then, $\dfrac{40A}{100} = \dfrac{2B}{3}$
=> $\dfrac{2A}{5} = \dfrac{2B}{3}$
=> $\dfrac{A}{B} = (\dfrac{2}{3}\times\dfrac{5}{2}) = \dfrac{5}{3}$
ஃ A : B = 5 : 3.
Let 40% of A = $\dfrac{2}{3}B$
then, $\dfrac{40A}{100} = \dfrac{2B}{3}$
=> $\dfrac{2A}{5} = \dfrac{2B}{3}$
=> $\dfrac{A}{B} = (\dfrac{2}{3}\times\dfrac{5}{2}) = \dfrac{5}{3}$
ஃ A : B = 5 : 3.