(a) Given Munnu’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 or in the past. What will the following expression indicate? Y + 7, y - 3, NCERT Solutions for Class 6 Maths Chapter 11 Exercise 11.4 - 2, NCERT Solutions for Class 6 Maths Chapter 11 Exercise 11.4 - 3 (c) Given n students in the class like football, what may 2n shows? What may n / 2 show?

Solution

(a)(x – 2) denotes the person whose age is (x – 2) years and he is 2 years younger to Munnu

(x + 4) denotes the person whose age is (x + 4) years and he is 4 years elder than Munnu

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

(b) In Future

After n years since now, Sara’s age will be (y + n) years

In past

n years ago, Sara’s age was (y – n) years

(y + 7) denotes the person whose age is (y + 7) years and is 7 years elder to Sara

(y – 3) denotes the person whose age is (y – 3) years and is 3 years younger to Sara


y +\(4\frac{1}{2}\)denotes the person whose age is y +\(4\frac{1}{2}\)years and is \(4\frac{1}{2}\)years elder to Sara

y -\(2\frac{1}{2}\)denotes the person whose age is y -\(2\frac{1}{2}\)years and is \(2\frac{1}{2}\) years younger to Sara

(c) 2n depicts the number of students who like either football or some other game like tennis whereas n / 2 shows the number of students who like tennis out of the total number of students who like football.

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