Question

By selling a bicycle for rupees 819 , Vinay Losses 9% . At what price should he sell it to make a profit of 5% ??? Full Explain plss

Answer 1

selling price is cost price minus 9%of the cost price
sp=cp-9/100%×cp
consider cp as x
819=x-9/100%×x
819=x-9x/100
819=109x/100
transfer 100 to LHS
81900=109x
81900/109=x
751.37=x
cp=751.37

if the bicycle was sold for 5% profit so,
sp=cp+5/100×cp
sp=751.37+5/100×751.37
sp=751.37+37.56
sp=788.93
therefore, the selling price will be Rs 788.93.
hope it helps: )