Question

Rohan is six years old then his younger brother. After 10 year, the sum of their age rohan will be 15 year. find the age of Rohan and his brothers.

Answer 1

let the age of Rohan's younger brother be x.
then the age of Rohan is x+6

after 10 years,
x+ (x+6) +10 + 10 (for his younger brother) = 15
2x + 26 = 15
2x = 15 - 26
2x = -11
x = -11/2

Rohan's younger brother's age is -11/2. means he is not born yet and it will take him 5 and a half years to born

Rohan's age = -11/2 + 6
= 1/2
= half years or 6 months