Question

Radha is 4 times as old as her daughter Riya.After 5 years,the sumof tgeir ages will be 80 years.Find Riya's present age .

Answer 1

let the daughter's age be x and let radha's age be 4x.
after 5 years      riya's age= (x+5)
                          radha's age= (4x+5)
x+5+4x+5= 80
5x+10= 80
5x= 80-10
5x=70
x=70/5
x=14

Riya's age = 14 years
Radha's age = 14X4
                     =56 years

Answer 2

Answer:

The present age of Radha's daughter Riya is 14 years.

Step-by-step explanation:

Consider that the age of Radha's daughter Riya = x

Given, the age of Radha is four times of age of Radha's daughter.

Then the age of Radha = 4x

After five years,

The age of Radha's daughter = x + 5

The age of Radha = 4x + 5

Given, after 5 years, the sum of age of Radha's daughter and Radha is equal to 80. Therefore,

x + 5 + 4x + 5 = 80

5x + 10 = 80

5x = 80 - 10

5x = 70

x = 14

Therefore, the present age of Riya = 14 years

The present age of Radha = 14 × 4 = 56 years

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