The fraction for the nails that remain is 32 3/16 pounds.
A fraction is simply a piece of a whole. The number is represented mathematically as a quotient where the numerator and denominator are split. In a simple fraction, the numerator as well as the denominator are both integers.
In this case, the box of nails weighs 42 5/8 pounds and you used 4 3/16 pounds of nails and another 6 1/4 pounds.
The nails left will be:
= Total nails - Nails used
= 42 5/8 - (4 3/16 + 6 1/4)
= 42 5/8 - 10 7/16
= 32 3/16
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