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Arun bought toffees at 6 for a rupee. How many for a rupee he should sell to gain 20%?

a) 2
b) 3
c) 4
d) 5

Answer: d
Explanation: CP for one toffee = $$\frac{{100}}{6}$$
SP will be 20% above the CP.
SP for one toffee = $$\frac{{100}}{6} \times 1.2 = \frac{{100}}{5} = 20$$
Thus, He should sell 5 toffee for Rs. 1 (100 paise)

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