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Can some one help me?
Mickey has 4 pennies, 4 nickels, 5 dimes, and 3 quarters in her backpack. If she selects one coin at random, what is the probability that it is not a quarter?

Respuesta :

huvbugkvku
Well all of the coins total to 16. There are 3 quarters so you do 16-3=13. Then divide that by the total number of coins found earlier.

Answer=  13
                  16  chance to not get a quarter
Commoncougar
Simply write out the probability of each.
Total coins: 4 + 4 + 5 + 3= 16

Pennies probability= 4/16
Nickels probability= 4/16
Dimes probability= 5/16
Quarters probability= 3/16

Now we just have to subtract the 3/16 probability of drawing a quarter from the whole, which is 16-3, or 13.

The probability of drawing and it not being quarter is 13/16.

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