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Let there be N coins in the piggy bank. 1 paise = 1/100 Rupee as 1 rupee = 100 paise Value of Each coin = 20 paise = 20 * 1/100 Rupees = 1/5 Rupees

Total Value of N coins = N * 1 / 5 Rupees This is equal to Rupees 60 So N / 5 = 60 So N = 5 * 60 = 300 coins SO there are 300 coins in the pigggy bank.

You can do this directly as : (second method) Number of coins = total value of all coins / value of each coin = 60 Rupees / 20 paise = 60 * 100 paise / 20 paise = 6000 / 20 = 300