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Electrical Engineering

A sum of Rs 315 consists of 25 paise, 50 paise and 1 Re coins in the ratio 3 : 4 :6. What is the number of each kind of coin respectively? A) 216, 144, 27 B) 108, 144, 216 C) 27, 72, 216 D) 120, 35, 108 E) 102, 150, 210

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 A sum of Rs 315 consists of 25 paise, 50 paise and 1 Re coins in the ratio 3 : 4 :6. What is the number of each kind of coin respectively? A) 216, 144, 27 B) 108, 144, 216 C) 27, 72, 216 D) 120, 35, 108 E) 102, 150, 210
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Answer: B

25 paise = 25/100 Rs, 50 paise = 50/100 Rs

So value ratio of these coins become = 3*(25/100) : 4*(50/100) : 6*(1)

= 3/4 : 2 : 6 = 3 : 8 : 24

So 25 paise coins value= [3/(3+8+24)] * 315 = Rs 27, so coins = 27 * (100/25) = 108

So 50 paise coins value= [8/(3+8+24)] * 315 = Rs 72, so coins = 72 * (100/50) = 144

So 1 paise coins value= [24/(3+8+24)] * 315 = Rs 216, so coins = 215 * (100/100) = 216
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