A) Rs.4000
B) Rs.3800
C) Rs.4200
D) Rs.4500
Correct Answer: A
Solution :
Let total income be Rs.\[x\] \[87\frac{1}{2}%\]of\[S.P.=M.P.\times \left\{ 1-\frac{Discount%}{100} \right\}\] \[\text{S}\text{.P}\text{.=M}\text{.P}\text{. }\!\!\times\!\!\text{ }\left\{ \text{1-}\frac{\text{Discount }\!\!%\!\!\text{ }}{\text{100}} \right\}\] \[\text{S}\text{.P}\text{.=M}\text{.P}\text{. }\!\!\times\!\!\text{ }\left\{ \frac{\text{100 - Discount }\!\!%\!\!\text{ }}{\text{100}} \right\}\]
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