The ratio of the age of A and B is 3 : 2. The ratio of the age of A, four years ago to the age of B after one year is 4 : 3. Find the present age of B.
Answer & explanation
Correct answer: option 2
A : B
3 : 2
↓-4 ↓+1
4 : 3
\(\frac{A}{B}\) =\(\frac{3}{2}\)
let age of A = 3x and age of B = 2x
Now , according to question
\(\frac{3x-4}{2x+1}\) = \(\frac{4}{3}\)
9x - 12 = 8x + 4
x = 16
B's present age = 2x16 = 32 years