Question

five years ago,deepika was twice as old as kanchan.five years later ,deepikas age will be 5 more than kanchans age .find their present ages.

Answer 1

Deepika =x
kanchan=y
according to -----1
x-y=5------1 equation
according to ------2
(x-5)(y-5)
(x-5)=(y-5)
x+y=-5-5
x+y=10-----2
add eqaution 1&2
x-y=5
x+y=10
---------
2x =15
•°•x= 15/2
x=7.5
•°•put the value of x in equation 2
x+y=10
7.5+y=10
10-7.5=y
2.5=y