Question

Riya is twice as old as priya now. Three years ago she was thrice as old as priya.How old is riya now?

Answer 1

Answer:12yrs

Step-by-step explanation:

let Riya's present age be r and Priya's present age be p

at present :

r=2p

3 years ago:

r-3=3(p-3)

substituting the value of p in terms of r from equation 1 in 2

r-3=3(r/2-3)

r-3=3r/2-9

6=r/2

r=12