question_answer

(a) Given, Mannu?s age to be x years, can you guess, what \[(x-2)\] may show? Can you guess what \[(x+4)\]may show? What \[(3x+7)\] may show?

(b) Given Sara?s age today to be y years. Think of her age in the future in the past. What will the following expression indicate?

\[(y+7),(y-3),\left( y+4\frac{1}{2} \right),\left( y-2\frac{1}{2} \right)\]

(c) Given, n students in the class like football what may 2 n show? What may \[\frac{n}{2}\] show?

Answer:

(a) \[(x-2)\] may show the age of his younger sibling.

\[(x+4)\] may show the age of his elder sibling  \[(3x+7)\] may show the age of his grandfather.

(b) The expressions \[(y+7)\],  may \[\left( y+4\frac{1}{2} \right)\] may

indicate sara?s future?s age, and \[(y-3)\left( y-2\frac{1}{2} \right)\]may indicate Sara?s past age.

(c) The expression 2 n may show the number of students who like hockey and the expression

\[\frac{n}{2}\] may show the number of students who like cricket.