Question

Fifteen years later shreya will be four time as old as she was fifteen years ago.how old is she now

Answer 1

Shreya's present age: x
x+15=4*(x-15)
x+15=4x-60
x-4x=-60-15
-3x=-75
x=-75/-3
x=25

So the present age of Shreya is 25! Huzzah!

Answer 2

X is her present age
15+x=4×(15-x)
15+x=60-4x
-45=-5x
X=9 years