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The marked price of an article is increased by 25% and the selling price is increased by 16.66%, then the amount of profit doubles. If the original marked price be Rs. 400 which is greater than the corresponding cost price by 33.33%, what is the increased selling price? |
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Answer» A. 480 LET, students APPEAR in exam C only =a Total students appeared in exam B=720 Ratio of NUMBER appeard in exam B and C only =`2:3` Students appeared in exam A andC both =a/2 Numberof students appeared in all three exams `=(4)/(100)xx2000=80` Number of students appeared in B exam only = No. OFSTUDENTS appeared in B and C only = 3X Number of students appeared in exam A and B only `=(2)/(3)xx3x=2x` Now, `2x+3x+3x+80=720` `rArr x=80` and, ` 12.5x +a+(a)/(2)=2000` `(5a)/(a)=1000` `rArr a=400` Students appeared in examA or in exam C `=360+120+80+160+400+200=1360` |
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