Question 2(d)

Change the following statement using expressions into statement in ordinary language.(For example, given Salim scores r run in a cricket match, Nalin scores (r + 15) runs. In ordinary language – Nalin scores 15 runs more than Salim.)

Jaggu is z years old. His uncle is 4z years old and his aunt is (4z -3 ) years old.

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Solution

Age of Jaggu = z years

Jaggu’s uncle’s age = 4z years

Jaggu’s aunt's age = (4z - 3) years

$\Rightarrow$ Jaggu’s uncle’s age is 4 times the age of Jaggu. Jaggu’s aunt is 3 years younger than his uncle.

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Question 2(d)

Change the following statement using expressions into statement in ordinary language.(For example, given Salim scores r run in a cricket match, Nalin scores (r + 15) runs. In ordinary language – Nalin scores 15 runs more than Salim.)

Jaggu is z years old. His uncle is 4z years old and his aunt is (4z -3 ) years old.

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

(For example, Given Salim scores r runs in a cricket match, Nalin scores

(r + 15) runs. In ordinary language − Nalin scores 15 runs more than Salim.)

(a) A note book costs Rs p. A book costs Rs 3 p.

(b) Tony puts q marbles on the table. He has 8 q marbles in his box.

(d) Jaggu is z years old. His uncle is 4 z years old and his aunt is (4z − 3) years old.

(e) In an arrangement of dots there are r rows. Each row contains 5 dots.

Question 2(b)

Tony puts q marbles on the table. He has 8q marbles in his box.

Question 2(c)

Our class has n students. The school has 20n students.

Question 2(e)

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

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Applications (Word Problem)

Standard VII Mathematics

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Age of Jaggu = z years Jaggu’s uncle’s age = 4z years Jaggu’s aunt's age = (4z - 3) years ⇒Jaggu’s uncle’s age is 4 times the age of Jaggu. Jaggu’s aunt is 3 years younger than his uncle.

Age of Jaggu = z years

Jaggu’s uncle’s age = 4z years

Jaggu’s aunt's age = (4z - 3) years

$\Rightarrow$ Jaggu’s uncle’s age is 4 times the age of Jaggu. Jaggu’s aunt is 3 years younger than his uncle.