Question

Consider the first situation, the daughter is half the age of the

mother and the grandmother is twice the age of the mother. The

sum of their ages is 140. Write an equation to represent this

situation and solve the equation to find the ages of each member of

the family.​

Answer 1

let age of daughter,mother and grand mother be a,b,c

given conditions

a=b/2 and c=2b

and a+b+c = 140

a+2a+4a=140

7a = 140

a=20

so b=40 and c=80

so age of daughter=20

age of mother =40

age of grandma=80