(a) Take Sarita's present age to be y yr.
(i) What will be her age 5 yr from now?
(ii) What was her age 3 yr back?
(iii) Sarita's grandfather is 6 times her age. What is the age of her grandfather?
(iv) Grandmother is 2 yr younger than grandfather. What is grandmother's age?
(v) Sarita's father's age is 5 yr more than 3 times Sarita's age. What is her father's age?

Meena, Beena and Leena are climbing the steps to the hill top. Meena is at step s, Beena is 8 steps ahead and Leena 7 steps behind. Where are Beena and Meena? The total number of stepsto the hill top is 10 less than 4 times what Meena has reached. Express the total number of steps using s.

The perimeter of an equilateral triangle having each side x cm long is 15 cm. Find the length of the side.

Sonal got 5 marks less than that of Ritu in a competition. If Ritu got 15 marks, how many marks obtained by Sonal?

Anil is x years old. Express the following in algebraic form.
(a) Anil's age after a period of 15 yr.
(b) 5 times Anil's age, 5 yr ago.
(c) What is his father's age, if he is 15 yr more than double of Anil's age?
(d) The present age of Anil's cousin, if his cousin is three years less than one-third Anil's age five years ago.
(e) Find the age of Anil's grandfather, if his age is double his son's age and the age of Anil's father is 20 yr more than Anil's age.

Translate each of the following statements into an equation, using x as the variable.
(a) 13 subtracted from twice a number gives 3.
(b) One-fifth of a number is 5 less than that number.
(c) Two-third of a number is 12.
(d) 9 added to twice a number gives 13.
(e) 1 subtracted from one-third of a number gives 1.

In a village, there are 9 water tanks to collect rain water. On a particular day, x L of rain water is collected per tank. If 200 L of water was already there in one of the tanks, what is the total amount of water in the tanks on that day?

Sumit is x yr old and Amit is 6 yr old. If their ages are multiplied, the result is their grandfather's age. Their father's age is 42 and exactly half of their grandfather's age. Then, find the age of Sumit.

The internal angles of a triangle are 2 x ,3 x and 5x. What is the difference between the largest and smallest angle?

If 3a + 2b = 12 and 2 a + 4b = 10, then find the values of a and b.