Answer:
142 3/8 pounds
Explanation:
(45 +7/8) + (42 +3/8) + (54 +1/8) = (45 +42 +54) +(7/8 +3/8 +1/8)
= 141 + (8/8 +3/8)
= 142 3/8 . . . . pounds
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