When 50% of a number A is added to B, the second number B increases by 25%. The ratio between the numbers A and B is:
Answer & explanation
Correct answer: option 3
25% = \(\frac{1}{4}\) & 50% = \(\frac{1}{2}\)
ATQ,
\(\frac{1}{2}\) × A + B = \(\frac{5}{4}\) × B
\(\frac{A}{2}\) = \(\frac{5B}{4}\) - B
A = \(\frac{1}{2}\) × B
So , A : B = 1 : 2