Paul is 15 years younger than his brother rahul. after 5 years he will be half of his brother age. what is rahul present age.
p = r - 15
p+5 = (1/2)(r+5)
2 p +10 = r+5
2 p = r - 5
2 p = 2 r - 30
-----------------
0 = -r +25
r = 25
p+5 = (1/2)(r+5)
2 p +10 = r+5
2 p = r - 5
2 p = 2 r - 30
-----------------
0 = -r +25
r = 25