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Oranges are bought at the rate of 10 for

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Oranges are bought at the rate of 10 for [#permalink]  05 Dec 2018, 03:27
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Question Stats:

71% (01:20) correct 28% (01:26) wrong based on 7 sessions
Oranges are bought at the rate of 10 for $25 and sold at the rate of 9 for$25. The profit is:

a) $$9 \frac{1}{11}$$ %

b) $$10$$%

c) $$11 \frac{1}{9}$$ %

d) $$12 \frac{1}{2}$$ %
e) $$2 \frac{1}{2}$$ %
[Reveal] Spoiler: OA

Last edited by chetan2u on 05 Dec 2018, 08:54, edited 5 times in total.
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Re: Oranges are bought at the rate of 10 for [#permalink]  05 Dec 2018, 04:14
Expert's post
Please, follow the rules for posting on the board: such as a proper title and not profit loss.

Moreover, Rs stands for ?? and also the question misses an option.

Regards
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Re: Oranges are bought at the rate of 10 for [#permalink]  05 Dec 2018, 08:54
Expert's post
Oranges are bought at the rate of 10 for $25 and sold at the rate of 9 for$25. The profit is:

a) $$9 \frac{1}{11}$$ %

b) $$10$$%

c) $$11 \frac{1}{9}$$ %

d) $$12 \frac{1}{2}$$ %
e) $$2 \frac{1}{2}$$ %

Cost price = the rate of 10 for $25= $$\frac{25}{10}$$ and Selling price = sold at the rate of 9 for$25= $$\frac{25}{9}$$
Profit = $$(\frac{25}{9}-\frac{25}{10})/\frac{25}{10}=\frac{25}{90}/\frac{25}{10}=\frac{1}{9}$$
Profit % = $$100*\frac{1}{9}$$= $$11 \frac{1}{9}$$ %

C
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Some useful Theory.
1. Arithmetic and Geometric progressions : https://greprepclub.com/forum/progressions-arithmetic-geometric-and-harmonic-11574.html#p27048
2. Effect of Arithmetic Operations on fraction : https://greprepclub.com/forum/effects-of-arithmetic-operations-on-fractions-11573.html?sid=d570445335a783891cd4d48a17db9825
3. Remainders : https://greprepclub.com/forum/remainders-what-you-should-know-11524.html
4. Number properties : https://greprepclub.com/forum/number-property-all-you-require-11518.html
5. Absolute Modulus and Inequalities : https://greprepclub.com/forum/absolute-modulus-a-better-understanding-11281.html

Re: Oranges are bought at the rate of 10 for   [#permalink] 05 Dec 2018, 08:54
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