we know that
[tex]1\ pound=453.592\ grams[/tex]
so by proportion
convert grams to pounds
Part a) [tex]800\ grams[/tex]
[tex]\frac{1}{453.592}\frac{lb}{g} =\frac{x}{800}\frac{lb}{g}\\ \\x*453.592=800\\ \\x=800/453.592[/tex]
[tex]x=1.76\ lbs[/tex]
therefore
the answer Part a) is
[tex]1.76\ lbs[/tex]
Part b) [tex]700\ grams[/tex]
[tex]\frac{1}{453.592}\frac{lb}{g} =\frac{x}{700}\frac{lb}{g}\\ \\x*453.592=700\\ \\x=700/453.592[/tex]
[tex]x=1.54\ lbs[/tex]
therefore
the answer Part b) is
[tex]1.54\ lbs[/tex]
