Answer:
A
Step-by-step explanation:
1st package weighs [tex]12\dfrac{1}{2}[/tex] pounds;
2nd package weighs [tex]35\dfrac{1}{4}[/tex] pounds;
3rd package weighs [tex]41\dfrac{7}{20}[/tex] pounds;
First, add whole numbers:
[tex]12+35+41=88[/tex]
Now add fractions:
[tex]\dfrac{1}{2}+\dfrac{1}{4}+\dfrac{7}{20}=\dfrac{10}{20}+\dfrac{5}{20}+\dfrac{7}{20}=\dfrac{10+5+7}{20}=\dfrac{22}{20}=\dfrac{11}{10}=1\dfrac{1}{10}[/tex]
So, the total weight is
[tex]88+1\dfrac{1}{10}=89\dfrac{1}{10}\ pounds[/tex]