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Answer:
Amir: 2/3
Whitney: 1/4
Explanation:
We can let w represent the fraction Whitney eats. Then the fraction Amir eats is (w+5/12). The total amount they eat is found by ...
w + (w +5/12) + 1/12 = 1
2w = 1/2 . . . . . subtract 6/12
w = 1/4 . . . . fraction Whitney eats
w+5/12 = 3/12 +5/12 = 8/12 = 2/3 . . . . fraction Amir eats