Let selling price = Rs. $$100$$
=> Profit on selling price = $$\frac{20}{100}\times100=Rs.$$ $$20$$
Thus, cost price = $$100-20=Rs.$$ $$80$$
$$\therefore$$ Profit on cost price = $$\frac{20}{80}\times100$$
= $$\frac{100}{4}=25\%$$
=> Ans - (D)
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