EXERCISE 11.4

Change the following statement using expression into statement in ordinary language.
 A notebook costs $₹\mathrm{p}.$ A book costs $₹3\mathrm{p}$.
 

Change the following statement using expressions into statement in ordinary language.
Tony puts $\mathrm{q}$ marbles on the table. He has $8\mathrm{}\mathrm{q}$ marbles in his box.

Change the following statement using expressions into statement in ordinary language.
Our class has $\mathrm{n}$ students. The school has $\mathrm{}20\mathrm{}\mathrm{n}$ students.

Change the following statement using expressions into statement in ordinary language.

Jaggu is $\mathrm{z}$ years old. His uncle is $4\mathrm{}\mathrm{z}$ years old and his aunt is $(4\mathrm{z}–3)$ years old.

Change the following statement using expressions into statement in ordinary language.

In an arrangement of dots there are $r$ rows. Each row contains $5$ dots.

Given: Munnu’s age to be x years, can you guess what $(\mathrm{x}\mathrm{}–2)$ may show?

Can you guess what $(\mathrm{x}+4)$ may show? What $(3\mathrm{x}+7)$ may show?

 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? $y+7, y-3, y+4\frac{1}{2}, y-2\frac{1}{2}.$

Given $n$ students in the class like football, what may $2n$ show? What may $\frac{n}{2}$ show?