David W. answered 11/06/17
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To make 10 quarter-pounders, Lao will need:
1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 + 1/4 = 10/4 lbs
10/4 = 2 1/2 lbs
This is 2 4/8 lbs.
Dao has 2 3/8 lbs, That is less than 2 4/8 lbs. He does not have enough.