23. Out of a number of electronic items, rohit purchases 60% coloured t.Vs. 5% of these are found to be defective. The percentage of defective t.Vs in all is _____.
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60x5/loo = 3
3% is defctive Tv
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let the total no. of electronic items be x
% of coloured tv bought=60/100*x=3x/5
defective tvs=5/100* 3/5x=3x/100
℅ of defetive tvs in all=3x/100/x *100=3℅
% of coloured tv bought=60/100*x=3x/5
defective tvs=5/100* 3/5x=3x/100
℅ of defetive tvs in all=3x/100/x *100=3℅
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