Express the following statements by equations :
A man distributed his savings equally among his four sons and each son received Rs. 300.

Express the following statements by equations : The sum of Rs 1200 and six times the monthly expenditure of a businessman is Rs. 9000.

Express the following statements by equations : The present age of a man is 37 years and that of his son is 7 years. After x years, the man's age will be 3 times his son's age.

Express the following statements by equations : Each one of three boys had the same amount of money. They together gave Rs 25 to a poor student and are left with only Rs. 5.

Express the following statements by equations : If the price of a duck is 15 times that of an egg, the total price of 3 ducks and 10 eggs is Rs 110.

Express the following statements by equations : While purchasing a bicycle, 500/- was paid in cash and the remaining amount was paid in four equal instalment. A total of 900/- is thus paid.

One year ago,a man was 8 times as old as his son.Now his is age is qual to the square of his son's age.Find his present age.

One year ago a man's age was 8 times of his son's age.At present his age is square of his son's age.Then find their present age.

Form the pair of linear equations for the following problems and find their solutions by substitution method.(iv) Five years hence,the age of Jacob will be three times that of his son.Five years ago.Jacob's age was seven times that of his son.What are their present ages.

At present a man is older than his son by 28 years. 12 years hence his age will be twice the age of his son. What are their present ages?

The age of a man is twice the square of the age of his son.Eight years hence,the age of the man will be 4years more than three times of the age of his son.Find their present ages.