Question

Ncert class 7 maths try these solutions page no. 167 Q1 and 2

Answer 1

Solution :-

(1) a)

→ Initial price of shirt = Rs. 80

→ Decreased price of shirt = Rs. 60

So,

→ Decreased price = 80 - 60 = Rs. 20

then,

→ Price decreased in % = (20 * 100)/80 = 25%

(b)

→ Initial marks in a test = 20

→ New marks in a test = 30

So,

→ Increased marks = 30 - 20 = 10

then,

→ Marks increased in % = (10 * 100)/20 = 50%

(2)

→ Initial price of petrol = Rs. 1 / litre

→ Price of petrol today = Rs. 52 per / litre .

So,

→ Priced gone up = 52/1 = 52 times .

then,

→ Required % = (52 * 100)/1 = 5200%

Learn more :-

(3) निम्न के स्थानीय मान लिखिये-

(अ)43.24

(स)884.20

(ब) 534.34

(द) 178.34

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