Khader’s monthly salary was Rs P in the year 2005. His salary in

2006 was Rs (P + 1000).

The number of students dropping out of school last year was m. Number of students dropping out of school this year is m – 30.

Price of petrol was Rs p per litre last month. Price of petrol now is Rs (p – 5) per litre.

The number of girls enrolled in a school last year was g. The number of girls enrolled this year in the school is 3g – 10.

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 number is 12.

(d) 9 added to twice a number gives 13.

(e) 1 subtracted from one-third of a number gives 1.