Question

if you are intelligent then tell me... A man asked to a girl that,what is your age? she said:" my age is half of my mother's age.. the he asked about her mothers age.. she said that my mother's age is 5yrs old from my father's age.then he asked about her father's age? she replied that our total age of 3 is 100.. then find my father' age,my mother's age and my age...

Answer 1

let the age of girl be x
mother age= y
father age = z

equations formed according to the question are
x= (1/2)y______(1)
z= y+5______(2)
and
x+y+z = 100______(3)

putting values of x and z from (1) and (2) I (3) we get,

(1/2)y +y+5 = 100
(y/2)+2y+5 = 100

(y+4y+10)/2= 100

5y + 10 = 200
5y = 200-10
5y= 190
y= 38


putting value of y in (1) and (2) we get,

x= (y/2) => x= (38/2)
x= 19

z= y+5
z= 38+5
z= 43

girl's age is 19
mother's age is 38
father's age is 43

hope this helps you