SOLUTION: sushma is now 15 years older than vijay but in three more years she will be eight times old as vijay was 3 years ago how old are they now i cant understand this question plz hel

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Question 398827: sushma is now 15 years older than vijay but in three more years she will be eight times old as vijay was 3 years ago how old are they now
i cant understand this question plz help me

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let s = Sushma's age now
Let v = Vijay's age now
s+%2B+3 = Sushma's age in 3 years
v+-+3 = Vijay's age 3 years ago
----------------------------
given:
(1) s+=+v+%2B+15
(2) s+%2B+3+=+8%2A%28v+-+3%29
---------------------
From (2):
s+%2B+3+=+8v+-+24
By substitution:
v+%2B+15+%2B+3+=+8v+-+24
7v+=+18+%2B+24
7v+=+42
v+=+6
And, from (1),
s+=+6+%2B+15
s+=+21
She is 21 and he is 6