Write the following in mathematical form using signs and symbols:

(i) 6 more than thrice a number x

(ii) 7 taken away from y

(iii) 3 less than quotient of x by y

Form six expressions using t and 4. Use not more than one number operation and every expression must have t in it.

Raju's father's age is 2 years more than 3 times Raju's age. If Raju's present age is y years, then what is his father's age?

Mohini is x years old. Express the following in algebraic form:

(i) three times Mohini's age next year.

(ii) four times Mohini's age 3 years ago.

(iii) the present age of Mohini's uncle, if his uncle is 5 times as old as Mohini will be two years from now.