percentages and profit,loss and interest

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need some book or some study material suggestion to brush up the basics for approaching problems on "percentages and profit,loss and interest" thank you in advance
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ashwin bought an article at rs. 200 and marked it at rs. 300. he offered a discount and then sold it. his profit/loss % and discount % are in ratio 3:2. find profit/loss %

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Abhaydeep
@Abhaydeep  ·  0 karma

It's 25%.. P%/D%= Profit* Mp/ ( Dis* CP)=3/2!! That would do!! :)

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Abhaydeep
@Abhaydeep  ·  0 karma

Yes its profit%. :)

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A person bought Rs. 7200 worth of 4% stock quoting at Rs. 90. When the stock is quoting at Rs. 105 he sells it. He invests this money in a 3% stock quoting at Rs. 70 and sells it when the stock was quoting at Rs. 80. What is the percentage of profit he makes from the overall transaction ?

25%
33 1/3%
50%
37 1/2%
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A trader cheats both his supplier and his customer by using faulty weights. When he buys from the supplier, he takes 10% more than the indicated weight. When he sells to his customer, he gives 10% less than the indicated weight. If he sells at his 'cost-price' (i.e., charges the cost price of the indicated weight), what is his profit percent ?

20%
10%
11 1/9%
22 2/9%
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After how many years (approximately) would the amount payable on a loan be twice the principal if the principal is lent at 20% CI, compounded half yearly?

PLEASE specify your approach

8
4
6
2
inner peace
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The rate of interest for the first 2 years is 3% per annum, for the next 3 years is 8% per annum, and for the period beyond 5 years is 10% per annum. If a man gets Rs. 1,520 as a simple interest for 6 years, how much did he deposit?

3800
3750
3775
375
inner peace
42 answers
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Profit on selling 10 candles equals selling price of 3 bulbs. While loss on selling 10 bulbs equals selling price of 4 candles. Also profit percentage equals to the loss percentage and cost of a candle is half of the cost of a bulb. What is the ratio of selling price of candle to the selling price of a bulb?

5:4
3:2
4:5
3:4
Complexity is the enemy of execution!!! ಠ_ಠ
3 likes1 comment29 answers
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A retail bookseller buys books at 58% of the list price. He expects to earn a minimum of 20% net profit on his selling price. What is the maximum discount that he can offer to his customer?

..Please help in the approach
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prerna4892
@prerna4892  ·  9 karma

30.4 is the answer

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Vmal
@Vmal  ·  0 karma

30.4

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Before an increment in ramu"s salary, the total expediture of the family was 60%of the total income. Ramu"s salary was equal to the total savings of the family then. If Ramu got 50%increment in his salary,then what are the new total savings of the family as a percentage of its new total income if its expenditure is kept constant?

33 1/2%
50%
66 2/3%
40%
mission IIM
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A man earns x% on the first 2000 rupees and y% on the rest of his income. If he earns Rs 700

from Rs 4000 and Rs 900 from Rs 5000 of income, find x.


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aashusculler
@aashusculler  ·  0 karma

he is earning rs 200 on each 1000 after first 2000.....by this we see he earns ¤ 300 0n 2000....which is 15%....

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hopeless2013
@hopeless2013  ·  0 karma

Go with options : 15% of 200 is 300.. So to earn 700 in first case he has to earn 400 from rest 2000 i.e., 20%.. Now in case of 5000 he has to earn 600 with rest 3000 i.e., again 20%.. So x=15% y=20% holds good.

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@Gireesh234

A Jewellery shop owner conducts his business in the following manner. Every once in a while he raises his prices by a certain percentage and while later he reduces his prices by the same percentage. After one such up-down cycle of increasing and decreasing the price by x%, the price of a jewel decreases by Rs. 100. In the next cycle, he increases and then decreases his price by (x/2)% and then sells the jewel for Rs. 2376. What is the initial price of the jewel ?



1) 2450



2) 2475



3) 2500



4) 2575 Skip



2500

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sureshpanda20
@sureshpanda20  ·  0 karma
@tanna @Gireesh234 kaise ?pls post the approach
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Pagalguy009
@Pagalguy009  ·  0 karma

Solution.?

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