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Ans 5:
Class : Class 7
Let the number of coins of ₹ 1 = 5xNumber of coins of 50 paise = 6xAnd number of coins of 25 paise = 8xAccording to question,5x × 100 6x × 50 8x × 25 = 420 × 100⇒ 500x 300x 200x = 4200⇒ 1000x = 42000 ⇒ x = 42∴ Number of coins of ₹ 1 = 5 × 42 = 210Number of coins of 50 paise = 6 × 42 = 252Number of coins of 25 paise = 8 × 42 = 336∴ Total number of coins= 210 252 336 = 798
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