Question

seema is 20 years old and reema is 4 years old.in how many years will seema be twice as old as reema

Answer 1

Age of Seema = 20 yrs
Age of Reema = 4 yrs

Let the number of years after which Seema will be twice as old as Reema be 'x'.

(20 + x) = 2(4 + x)
20 + x = 8 + 2x
20 - 8 = 2x - x
12 = x

Therefore, Seema will be twice as old as Reema after 12 years.

Answer 2

(20+x)= 2×(4+x)
20+x = 8+2x
12=x


so
4+12= 16
20 + 12 =32
so seema age will be double to that of reema age after 12 yrs