Question

By selling a vcd player for RS.1950.i got a profit of 30%.at what price I sale it in order to get a profit of 40%

Answer 1

HERE
IN FIRST CONDITION
SP=1950
PROFIT=30%
LET CP BE ;X'
NOW
SP=CP+30%*CP
OR,1950=X+30%*X
OR,1950=X+30X/100
X=1500
IN SECOND CONDITION
CP=1500
PROFIT=40%
SP=1500+40%*1500
    =2100
IT MUST BE SOLD IN 2100RS TO GET PROFIT OF 40%