If the price per unit decrease by 20% during 2004 - 2008 and cost per unit increase by 20% during 2009 - 2014, then during how many number of years there is loss?
A
3 years
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B
4 years
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C
5 years
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D
7 years
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E
None of these
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Solution
The correct option is C 5 years YearNewrevenueTotalcost=Oldrevenue−Profit200480%of‘700=560700200580%of1400=11201300200680%of1200=960900200780%of900=720750200880%of1100=88011002009400120%of250=3002010200120%of100=1202011700120%of500=6002012600120%of600=7202013800120%of400=4802014900120%of600=720 In a year when total cost is more than new revenue then in that year there is loss. These years are 2004, 2005, 2006, 2007 and 2008 So, there are total 5 yrs.