The total ages of A, B and C at present is 90 years. Ten years ago the ratio of their ages was 1 : 2 : 3. Find the present age of B.
Answer & explanation
Correct answer: option 1
According to question,
A : B ; C
1 : 2 : 3 ( 10 years ago )
Now, as per above ration, 10 years ago the age of A = X , age of B = 2x and age of C = 3x
ATQ,
x + 10 + 2x + 10 + 3x + 10 = 90
6x = 60
x = 10
present age of B = 2 × 10 + 10 = 30 years