Question
PSLE
Charles has a number of 5¢, 10¢ and 20¢ coins in the ratio 1 : 2 : 4. The total value of all the coins is $18.90. What is the total value of the 20¢ coins?
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PSLE
Charles has a number of 5¢, 10¢ and 20¢ coins in the ratio 1 : 2 : 4. The total value of all the coins is $18.90. What is the total value of the 20¢ coins?