The ratio between the ages of Appu and Ryan at present is 3 : 4. Five years ago the ratio of their ages was 2:3. What is the present age of Appu ?
A15 years
B20 years
C12 years
D30 years
Answer:
A. 15 years
Read Explanation:
The age of appu = A
The age of rayan =R
A/B=3x/4x ie A=3x & B=4x
5 years before the ratio of ages is
(A-5)/(b-5)=2/3
want to find x
(3x-5)/(4x-5)=2/3
(3x-5)x3=(4x-5)x2
9x-15=8x-10
x=5
then age of appu =A=3x=3x5=15