Question

Q4. The average age of Rinku and Ridipta is 18 years. When Rita replaces Ridipta, the
average age is increased by 1 and when Ridipta replaces Rinku the average age becomes 17
years. What is the age of Rita?​

Answer 1

Answer:

18 yrs

Step-by-step explanation:

the age of Rita is 18 yrs.

Ridipta's age is 16yrs

and Rinku's age is 20 yrs

Answer 2

Answer:

Age of Rita is 18 years.

Step-by-step explanation:

Combined age of Rinku and Ridipta = $18\times 2$ = 36 years

Combined age of Rinku and Rita = $19\times 2$ = 38 years

Combined age of Rita and Ridipta = $17\times 2$ = 34 years

From the above if we subtract the combined age of Rinku and Ridipta from the combined age of Rinku and Ridipta

Age of Rita -  Age of Ridipta = 38 - 36 = 2

Adding in the above, the age of Rita 8nd Ridipta we get

Twice the age of Rita = 36 years

or, age of Rita = 36/2 = 16 years

Hope this answer is helpful.