search
Log In
Quick search syntax
tags tag:apple
author user:martin
title title:apple
content content:apple
exclude -tag:apple
force match +apple
views views:100
score score:10
answers answers:2
is accepted isaccepted:true
is closed isclosed:true
1 vote
4.6k views
Had a trader bought an item at 10% less and sold it at 10% more, he would have doubled his profit percentage. What was the original profit percentage?
in Quantitative Aptitude 7.9k points 236 900 1073 4.6k views

2 Answers

2 votes
 
Best answer

$\frac{200}{7}\%$ should be the right answer.


Let the original buying price be X Rupees, and let the original selling price be $(X \times Y)$ Rupees.

Then the original profit will be $(Y - 1).100\%$.

Now if we drop buying price by $10\%$ it will become $(0.9  X)$ Rupees and if we increase selling price by $10\%$ it will become $(1.1 .(X.Y))$, & the modified profit will be $\frac{(1.1 Y - 0.9)}{0.9}\times 100\%$.

It is given that 

$$2.(Y - 1) = \frac{1.1  Y - 0.9}{0.9}$$

On solving this we get $Y = \frac{9}{7}$,

so the original profit percentage $= \left(\frac{9}{7} - 1\right).100 = \frac{200}{7}\%$

 

1.4k points 3 14
selected by
0 votes
28,57%
410 points 2 4

Related questions

1 vote
2 answers
1
2.5k views
If between 1987 and 2007 the trend for fashion ties had been the same as for cravats, how many fashion ties would have been sold in 2007? 72600 72100 71300 70500 69200 For all types of tie together, what is the percentage decline between 2002 and 2007? (to nearest five ... 5% what was the total value of silk Ties sold in 2002? ( to nearest £1000) £372,000 £382,000 £392,000 £402,000 £412.000
asked Jul 31, 2015 in Quantitative Aptitude makhdoom ghaya 7.9k points 236 900 1073 2.5k views
1 vote
1 answer
4
...