Question

Class VII student Ridhima asked her grandmother,
Ridhima: Dadi ma what is your age
Grandmother: My age is twice as your father’s age.
Ridhima: Then tell me my father’s age.
Grandmother: ok beta,I will give you a hint.your age is15 years,if you add your age to
your father’s age and if result is added to my age ,total becomes 120.
a) What is the age of Ridhima’s father?.
b) what is her grandmother's age?

Answer 1

The age of ridhima's father is=30

The age of ridhima's grandmother is =60

Step-by-step explanation:

1) the age of ridhima is =15+15=30

so the twice of ridhima's age=30

therefore the age of ridhima's father is=30

2)the age of ridhima's grandmother is =?

let the age of radhima's father age=30

so adding of 30+30=60

so the age of ridhimas grandmother =60

Answer 2

Given : Ridhima asked her grandmother,  

Ridhima: Dadi ma what is your age

Grandmother: My age is twice as your father’s age.

Ridhima: Then tell me my father’s age.

Grandmother: ok beta,I will give you a hint.your age is15 years,if you add your age to

your father’s age and if result is added to my age ,total becomes 120.  

To Find : a) What is the age of Ridhima’s father?.

b) what is her grandmother's age?

Solution:

Ridhima Grandmother  age = Twice Ridhima Father Age

Ridhima Age + Ridhima Father Age + Ridhima Grandmother  age =  120

Ridhima Age =  15 Years

Ridhima Grandmother  age = Twice Ridhima Father Age

=> 15 + Ridhima Father Age + 2 x Ridhima Father Age = 120

=> 3  x Ridhima Father Age   = 105

=> Ridhima Father Age   =  35

Ridhima Father Age   =  35

Ridhima Grandmother  age  = 2 x 35 = 70 Years

Ridhima Father Age   =  35  YEARS

Ridhima Grandmother  age  = 70 YEARS

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