Question

Toffees are bought at the rate of 7 for a rupee and sold at the rate of 5 for a rupee.
Find the gain%.​

Answer 1

Answer:

40%

Step-by-step explanation:

First take out 1 toffee C.P &S.P

Second subtract SP-CP

Third take out the percentage

Answer 2

Answer:

40%

Step-by-step explanation:

C.P of 7 toffees = 1

c.p of 1 toffee = $\frac{1}{7}$

sp of 5 toffees=1

sp of 1 toffee = $\frac{1}{5}$

Gain=$\frac{1}{5}$ -  $\frac{1}{7}$ = $\frac{7 - 5}{35}$ = $\frac{2}{35}$

Gain% = $\frac{2}{35}$/ $\frac{1}{7}$ * 100% = $\frac{2}{35}$ * $\frac{7}{1}$ * 100 = 40%

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