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anonymous

  • one year ago

Solve using the guess-and-test strategy. Ira has 28¢ in his pocket. He has 20 coins that are either pennies or nickels. How many nickels does Ira have? A. 26 B. 22 C. 18 D. 2

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  1. welshfella
    • one year ago
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    i'm from the uk - how many cents are there in a nickel and a penny?

  2. anonymous
    • one year ago
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    nickel is 5 cents and a penny is 1 cent

  3. welshfella
    • one year ago
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    oh ok

  4. welshfella
    • one year ago
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    well he can't have a lot of nickels

  5. welshfella
    • one year ago
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    because 18 nickels = 90 cents and he only has 28 cents so what do you think?

  6. welshfella
    • one year ago
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    so l8 nickels or more cannot be correct.

  7. anonymous
    • one year ago
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    is 22 the answer

  8. welshfella
    • one year ago
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    No because 22 nickels = 5*22 = 110 cents.

  9. anonymous
    • one year ago
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    oh

  10. welshfella
    • one year ago
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    - and he only has 28 cents

  11. welshfella
    • one year ago
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    Do you follow the argument?

  12. anonymous
    • one year ago
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    is the answer 2

  13. welshfella
    • one year ago
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    yes- it must be.

  14. welshfella
    • one year ago
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    and if you add it up it comes to 28 cents 2 nickels = 10 cents + 18 pennies = 28 cents and total coins = 20.

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