Question
In a stock of electronics (laptops + mobiles), if 25% of
mobiles were laptops, then the number of laptops would have been 150% more than that of mobiles. Find the original percentage of laptops in the stock of electronics.Solution
ATQ, When 25% of the mobiles were laptops: Let the number of mobiles be ‘x’ Therefore, number of laptops = 2.5x Total number of electronics = x + 2.5x = 3.5x Now, original number of mobiles = x/0.75 = 1.33x Therefore, original number of laptops = 3.5x – 1.33x = 2.17x Required percentage = (2.17x/3.5x) × 100 = 62%
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