Question

By selling 100 Diwali cards a shopkeeper gains the S. P of 40 cards. Find his gain percent

Answer 1

please find the attachment

Answer 2

let the selling price of each Greeting card be Rupee 1

then by selling Greeting card she made rs.100

now she made a profit of rs.40

so cp of those 100 Greeting card were rs60

or cp of 1 Greeting card be 60 paise

gain =40 paise

percent gain=40/60×100=

66.66 percent gain