Profit and Loss, General Mathematics

Question: Toffees bought at the rate of 3 for a taka. to gain 50 %, they must be sold at
A
2 for a taka

B
1 for a taka

C
4 for a taka

D
5 for a taka

Note: C.P of 3 toffees = Tk 1 S.P of 3 toffees = 150 % of Tk 1 = Tk `3/2` For taka `3/2`, toffees sold = 3 For taka 1, toffees sold = `(3 xx 2/3)` = 2
1. Report
Question: By selling toffees at 20 for a taka, a man loses 4 %. To gain 20 % for 1 taka, he must sell
A
16 toffees

B
20 toffees

C
24 toffees

D
25 toffees

Note: Let S.P of 20 toffees be tk x. then, 96 : 1 = 120 : x or, x = `(120)/96` = `5/4` For taka `5/4`, toffees sold = 20 For taka 1, toffees sold = `(20 xx 4/5)` =16
1. Report

Question: Toffees bought at the rate of 3 for a taka. to gain 50 %, they must be sold at