I need 2 know how u guys are approaching the following question Your methods plz The question was asked in a CL mock
A dealer marks up the cost price of an article by ‘p%’, and then gives a discount of ‘p%’ on the marked price. Now the price of the article is Rs. 21 less than the cost price of the article. He again marks up the decreased price by ‘p%’ and then gives a discount of ‘p%’ . if the price of article now is Rs. 2058,then find the value of p? b. 9 c. 10 d. 12 |
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We can solve this prob by trial and error
it takes less time than conventional method
Since in the first case the CP has been rised by p % and then
discounted by p% there will always be loss of p2/100 %
Since the given diff between CP and the discounted prices is 21
and the final cost of article is 2058 the ans should be around 10%
lets take p = 8% then the loss is only 0.64 % which makes the initial CP as 3250,
which is far from 2058 ( keep in mind that the loss is only 0.64%).
Similarly check with 9% and then with 10%
the ans is (C) 10%
It would be wise to check with 10% first.
Pls post whether the ans is correct or not
thank u
shahid
n/a
Thanks shabash_23
Pls post if u have any other alternative method
to find the solution.
thank u
shahid
n/a
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