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Chirag Budhwar
CAT Preparation Community 4y ago
A shopkeeper on selling 630 pens makes a profit equal to the selling price of 90 pens, find the profit percentage?
7
Kartikay Karnwal 4y ago
16.67?
Chirag Budhwar 4y ago
it's correct,
but how did we arrive at 16.67?
Elon Musk 4y ago
16.67 percentage
is the answer
RISHI MUKHERJEE 4y ago
Consider SP of one pen to be x
As per the question, when he sells 630 pens, he makes a profit equivalent to the SP of 90 pens.
Profit = SP - CP
90x (SP of 90 pen) = 630x (SP of 630 pens) - CP
CP = 540x
Profit % = 90x/540x *100 = 16.67%
This is the approach I used, kindly share if you know some other way to solve it.
Vidushi Razdan 4y ago
so, suppose x is the sp of pens. Therefore, CP= SP- Profit. SP= 630X. Profit = 90X. therefore, CP= 540X. Profit= 90/540*100= 16.67%
Arnav Gandhi 4y ago
Hi
Let C.P be x and S.P be y
Now we know profit = S.P-C.P
And it says profit on selling 630 pens
so profit will be 630(y-x) (1)
Now this profit equals selling price of 90 pens so we can say
630(y-x) =90y
we get 540y =630x
or y/x = 7/6
Therefore profit percentage = (7-6)/6 *100 =100/6 =16.67%
Chirag Budhwar 4y ago
Thank you so much for the answer :D
