Let CP be x
∴ MP = 1.8 x
∴ SP of 15 articles = 12 * 1.8x = 21.6x
∴ Discount = 0.9 x 21.6x = 19.44x
∴Profit on 15 articles = (19.44 - 15)x
∴ Profit % =(4.44x/15x) = 29.6%
Rate in which the rent is to be divided = 4 : 8 : 12
A's share of rent= (8/24) * 6000 =Rs.2000
C.P. of goods for the trader = Rs.22520
S.P. = 125 x 22520 = Rs.28150
∴ Profit = Rs.5630
Now, 5630 = 0.0536 x 5000 + 0.085 x 10000 + (x/100)* 7520
=>5630 =268 - 850 + 75.2x
=>75.2x = Rs.4512, which is nothing but profit from sale of third lot.
10. Buy two and get one free. Which of the following is true?