The fraction of the Skittles that was red will be 63/100.
From the information given, it was stated that in the package of Skittles, Carmela found that 21% of them were red and 0.16 were green. It should be noted that fraction simply means the number that's expressed as a quotient where the numerator will be divided by the denominator. In this case, on simple fraction, the numerator and the denominator are integers.
Therefore, the fraction that was red based on the information will be:
= 1 - (21% + 0.16)
= 1 - (0.21 + 0.16)
= 1 - 0.37
= 0.63
= 63/100
Therefore, the fraction of the Skittles that was red will be 63/100.
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