SP of each car is Rs. 404415, he gains 15% on first car and losses 15% on second car.
% Profit with respect to A = 40 + 50 + (40 x 50)/100 = 90 + 20 = 110 %.
SP of each car is Rs. 325475, he gains 12% on first car and losses 12% on second car.
In this case, there will be loss and percentage of loss is given by
= [(profit%)(loss%)]/100 = (12)(12)/100 % = 1.44%
Let C.P.= Rs. 100.
Then, Profit = Rs. 320,
S.P. = Rs. 420.
New C.P. = 125% of Rs. 100 = Rs. 125
New S.P. = Rs. 420.
Profit = Rs. (420 - 125) = Rs. 295
Required percentage = (295/420) * 100
= 70%(approx)
Given,Let the cost price of single book be Rs. 100.
The cost price of (9 + 1) = 10 pair i.e. 20 books = Rs. (100 × 20) = Rs. 2000.He gets profit of 26%.
So, the selling price of 9 pair i.e. 18 books = Rs. 2000 × (126/100) = Rs. 2520
Then,the selling price of single book = Rs. 2520/18 = Rs. 140
He gives 20% discount on the marked price of a book.
That means, when the selling price is Rs. 80 then the marked price is Rs. 100.
?When the selling price of single book is Rs. 140, the marked price = Rs. 140 × (100/80) = Rs. 175
?The percentage increase in marked price from the cost price = (175 ?100)% = 75%
C.P of article = 6500 * (100/80) = Rs. 8125 S.P for a gain of 20% = (8125*120)/100 = Rs. 9750
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