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There are 54 coins in total. Some are 20-cent coins and some are 50-cent coins. Their total value is $20.70. How many 20-cent coins are there
  1. 21
  2. 23
  3. 27
  4. 31
Explanation

Let the number of 20-cent coins = x
Then 50-cent coins = 54 − x

0.20x + 0.50(54 − x) = 20.70
x = 23

Last updated 27-07-2026 by NA

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