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Answer :

CP of book = Rs. 275

Loss = 15%

SP = \(\frac{CP×(100-L%)}{100} \)

= \(\frac{275×(100-15)}{100} \) = \(\frac{275×(85)}{100} \) = Rs.233.75

- Q.1 Tell what is the profit or loss in the following transactions. Also find profit per cent or loss per cent in each case. (a) Gardening shears bought for Rs.250 and sold for Rs. 325. (b) A refrigerator bought for Rs. 12,000 and sold at Rs.13,500. (c) A cupboard bought for Rs. 2,500 and sold at Rs.3,000. (d) A skirt bought for Rs. 250 and sold at Rs.150.
- Q.2 Convert each part of the ratio to Percentage: (a) 3:1 (b) 2:3:5 (c) 1 : 4 (d) 1:2:5
- Q.3 The population of a city decreased from 25,000 to 24,500. Find the Percentage decrease.
- Q.4 Arun bought a car for ? 3,50,000. The next year, the price went upto ? 3,70,000. What was the Percentage of price increase?
- Q.5 I buy a TV for Rs.10,000 and sell it at a profit of 20%. How much money do I get for it?
- Q.6 Juhi sells a washing machine for Rs.13,500. She loses 20% in the bargain. What was the price at which she bought it?
- Q.7 (i) Chalk contains calcium, carbon and oxygen in the ratio 10 : 3 : 12. Find the Percentage of carbon in chalk. (ii) If in a stick of chalk, carbon is 3 g, what is the weight of the chalk stick?
- Q.9 Find the amount to be paid at the end of 3 years in each case. (a) Principal = Rs. 1200 at 12% p.a. (b) Principal = Rs. 7500 at 5% p.a.
- Q.10 What rate gives Rs. 280 as interest on a sum of Rs.56,000 in 2 years?
- Q.11 If Meena gives an interest of Rs. 45 for one year at 9% rate p.a. What is the sum she has borrowed?

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