## RS Aggarwal Class 7 Math Eleventh Chapter Profit and Loss Exercise 11A Solution

## EXERCISE 11A

**(1) Find the SP when:**

(i) CP = Rs 950, gain = 6%

(ii) CP= Rs 9600, gain = 16 2/3%

(iii) CP = Rs 1540, loss = 4%

(iv) CP = Rs 8640, loss = 12 1/2%

**(2) Find the gain or loss per cent when:**

(i) CP= Rs 2400 and SP = Rs 2592

(ii) CP = Rs 1650 and SP = Rs 1452

(iii) CP = Rs 12000 and SP = Rs 12800

(iv) CP = Rs 1800 and SP = Rs 1611

**(3) Find the CP when:**

(i) SP = Rs 924, gain = 10%

(ii) SP = Rs 1755, gain = 12 1/2%

(iii) SP = Rs 8510, Loss = 8%

(iv) SP = Rs 5600, loss = 6 2/3%

**(4) Sudhir bought an almirah for Rs 13600 and spent Rs 400 on its transporation. He sold it for Rs 16800. Find his gain per cent.**

**(5) Ravi purchased an old house for Rs 765000 and spent Rs 11500 on its repairs. Then, he sold it at a gain of 5%. How much did he get?**

**(6) A vendor buys lemons at Rs 25 per dozen and sells them at the rate of 5 for Rs 12. Find his gain or loss per cent.**

**(7) The selling price of 12 pens is equal to the cost price of 15 pens. Find the gain per cent.**

**(8) The selling price of 16 spoons is equal to the cost price of 15 spoons. Find the loss per cent.**

**(9) Manoj purchased a video for Rs 12000. He sold it to Rahul at a gain of 10%. If Rahul sells it to Rakesh at a loss of 5%, what did Rakesh pay for it?**

**(10) On selling a sofa-set for Rs 24600, a dealer gains 8%, For how much did he purchase it?**

**(11) On selling a watch for Rs 11400, a shopkeeper losses 5%. For how much did he purchase it.**

**(12) On selling a calculator for Rs 1325, a man gains 6%. For how much should he sell it to gain 12%?**

**(13) On selling a computer for Rs 24480, a dealer loses 4%. For how much should he sell it to gain 4%?**

**(14) A tricycle is sold at a gain of 15%. Had it been sold for Rs 108 more, the profit would have been 20%. Find its cost price.**

Solution: Let the CP be x.

If it is sold at 15% gain.

Therefore, the CP is Rs 2160.

**(15) Sandeep sold a television at a loss of 8%. If he had sold it for Rs 3360 more, he would have gained 6%. For how much did Sandeep buy it?**

**(16) Pankaj sells two cycles for Rs 2376 each. On one he gains 10% and on the other he losses 10% and on the other he losses 10%. Find his gain or loss per cent.**

**(17) On selling an exhaust fan for Rs 7350, a man gains **** of its cost price. Find the cost price of the fan.**

**(18) Mohit sold a watch to Karim at a gain of 10% and Karim sold it to Rahim at a gain of 4%. If Rahim pays Rs 14300 for it, for how much did Mohit purchase it?**

**(19) If the manufacturer gains 10%, the wholesale dealer 15%, and the retailer 25% then what is the production cost of a washing machine whose retail price is Rs 37950?**

**(20) Mr Mehta purchased a video for Rs 20000 and a television for Rs 30000. On the video he lost 5% and on the television he gained 8%. Find his total gain or loss per cent.**

**(21) By selling 36 oranges, a vendor suffers a loss equal to the selling price of 4 oranges. Find his loss per cent.**

**(22) By selling 8 dozen pencils, a shopkeeper gains the selling price of one dozen pencils. Find his gain per cent.**

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