Question

28. A vendor bought 6 toffees for a rupee. How many for a rupee should he sell to make a profit of 20%?

Answer 1

Answer:

To gain 20%, 6 tofees shall be sold for Rs.1.20

Thus, the SP of each tofee is 20p

Hence for a rupee 5 tofees shall be sold to gain 20%8

Answer 2

cost price of 6 toffees= ₹1

cost price of 1toffee= 1/6

let, the sp of 1 toffee= 1/x

from formula,

profit%= sp-cp/cp×100

20 = 1/x - 1/6 ×100

20/100= 1/x-1/6

1/5= 1/x- 1/6

1/5+1/6= 1/x

11/30= 1/x

30/11= x/1

₹30/11=x