Two numbers A and B are such that the sum of 3% of A and 6% of B is four-fifths of the sum of 4% of A and 6% of B. Find the ratio of A + B and A − B.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 7: 5.
According to the question;
3% of A + 6% of B = 4/5 × (4% of A + 6% of B)
⇒ 3 × A + 6 × B = 4/5 × (4 × A + 6 × B)
⇒ A + B / A – B = 7 / 5.
(A + B) : (A - B) = 7 : 5