Question

/amir's age is twice the sum of the ages of his two daughters and 5 years ago,his age was thrice the age of sum their ages.Find his present age

Answer 1

present sum of ages of his 2 daughters: s

age of amir: M

M=2s

M-5=3(s-10)

s-10 because we considered the sum of ages for 2 daughters.

use simultaneous eq. to solve it