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Answer: B Quantity I: CP of the article = Rs.3000 SP of the article = 3000 + 240 = Rs.3240 So, 405 * (100 – x) = 32400 40500 – 405x = 32400 x = 20 Quantity II: Let C’s present age = ‘x’ years So, B’s present age = (x – 12) years And A’s present age = (x – 12 – 6) = (x – 18) years
12x – 180 = 7x x = 36 So, age of A after 4 years = 36 – 18 + 4 = 22 years Hence, Quantity I < Quantity II
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Lines joining places of equal temperature are called
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II. Speed of sound ...
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