Leela is Radha's youger sister.Leela is 4 years younger than Radha.Can you write Leela's age in terms of Radha's age ?Take Radha 's age to be x years.

Set up an equation in the following cases: Laxmi’s father is 49 years old. He is 4 years older than three times Laxmi’s age. (Take Laxmi’s age to be y years.)

My brother's age is 3 years more than twice my age. If my age is x years, what is my brother's age?

Baichung’s father is 26 years younger than Baichung’s grandfather and 29 years older than Baichung. The sum of the ages of all the three is 135 years. What is the age of each one of them?

Raju’s father’s age is 5 years more than three times Raju’s age. Find Raju’s age, if his father is 44 years old.

The ages of the students of a class form an A.P. whose common difference is 4 months. If the youngest student is 8 years old and the sum of the ages of all the students of the class 1s 168 years, find the number of students in the class.

From the pair of linear equations in the following problems and find their solutions (if they exist) by elimination method : The ages of two friends A and B differ by 3 years, A's father D is twice as old as A, and B is twice old as his sister C. The ages of C and D differ by 30 years. Find ages of A and B if A is elder than B.