Question

a man sold a bicycle at 5%profit . If the cost has been 30%less and the selling price ₹63 less , he would have made a profit of 30 %. What was the cost price of the bicycle

Answer 1

let the c.p be $ 100
gain=5%
sp=100×5% of 100
sp =$105
if the C.P had been 30%less then

supposed C.P =70
gain =30%
SP=70+30%of70
new S.P=91
deffrence between old SP and newSP
=105-91
=14
then the CP is 14
if the difference is 14 then the CP=100
if the difference is 1 then the CP=100/4
if the difference is 63 then the CP=(100*63)/14
hense,
the cost price of bicycle=450