Khairi has only 20¢ and 50¢ coins in his coin bank. There are twice as many 20¢ coins as 50¢ coins. How many 20¢ coins are there in the coin bank if all the coins add up to $17.10?

Khairi has only 20¢ and 50¢ coins in his coin bank. There are twice as

many 20¢ coins as 50¢ coins. How many 20¢ coins are there in the coin
bank if all the coins add up to $17.10?

1 Answer

Khairi has only 20¢ and 50¢ coins in his coin bank. There are twice as many 20¢ coins as 50¢ coins. How many 20¢ coins are there in the coin bank if all the coins add up to $17.…

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