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Algebra

Question 3:

(a) Given Munnu’s age to be x years, can you guess what (x − 2) may show?

(Hint: Think of Mannu’s younger brother.)

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 or in the past.

What will the following expression indicate?

(c) Given n students in the class like football, what may 2n show? What may show? (Hint: Think of games other than football).

Answer:

(a)(x − 2) represents that the person, whose age is (x − 2) years, is 2 years younger to Munnu.

(x + 4) represents that the person, whose age is (x + 4) years, is 4 years elder to Munnu.

(3x + 7) represents that the person, whose age is (3x + 7) years, is elder to Munnu and his age is 7 years more than three times of the age of Munnu....

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