Expression : 0.8 x cost price = 0.6 x selling price
=> $$\frac{C.P.}{S.P.}=\frac{0.6}{0.8}=\frac{3}{4}$$
$$\therefore$$ Profit % = $$\frac{(S.P.-C.P.)}{C.P.}\times100$$
= $$\frac{(4-3)}{3}\times100$$
= $$\frac{100}{3}=33.33\%$$
=> Ans - (A)
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