The total of 324 of 20 paise and 25 paise make a sum of Rs. 71. The no of 20 paise coins is :
A) 50 B) 100 C) 150 D) 200
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Answer:
Step-by-step explanation:
Let the number of 20-paise coins be x. Then, number of 25-paise coins = (324 - x).
Therefore
0.20 x x + 0.25 (324 - x) = 71 ⇔ 20x + 25 (324 - x) = 7100
⇔ 5x= 1000 ⇔ x = 200.
Hence, number of 25-paise coins = (324 - x) - 124.
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Answer:
A)50 is the correct answer
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