Answer:
Sum of their present ages  = 20 years
Step-by-step explanation:
Present age :
  Neha's age = x years
Reemas' age = x - 4
After 5 years:
    Neha's age = (x +5) years
    Reemas' age = (x - 4 + 5 ) = x + 1
Sum of the ages of Reema and Neha will be 30
Therefore, Â Â
x + 5 Â + x + 1 = 30
x + x + 5 + 1 = 30
  2x +  6   = 30
      2x = 30 - 6
      2x = 24
       x = 24/2
      x = 12
Neha's age = 12 years
Reema's age = 12 - 4 = 8 years
Sum of their present ages = 12 + 8 = 20 years