Topic 3: Fractions

Try the problem below. After you try the problem, you can watch a video to see a correct solution.
Xu Li and Elsa received a box of chocolates as a gift. Xu Li ate \(\frac{2}{7}\) of the box of chocolates and Elsa ate \(\frac{3}{5}\) of the same box of chocolates. What fraction of the box of chocolates is left to serve to guests?
A
\(\displaystyle{\frac{31}{35}}\)
B
\(\displaystyle{\frac{5}{12}}\)
C
\(\displaystyle{\frac{4}{35}}\)
D
\(\displaystyle{\frac{5}{35}}\)
E
\(\displaystyle{\frac{29}{35}}\)
Proportions
Proportions

After watching the video, try this problem to practice more.

Proportions
Proportions
James and Gary bought a pizza pie for dinner. James ate \(\frac{1}{6}\) of the pie and Gary ate \(\frac{2}{9}\) of the same pizza pie. How much of the pizza pie is left for the rest of the family?
A
\(\displaystyle{\frac{11}{18}}\)
B
\(\displaystyle{\frac{4}{5}}\)
C
\(\displaystyle{\frac{1}{5}}\)
D
\(\displaystyle{\frac{7}{18}}\)
E
\(\displaystyle{\frac{1}{27}}\)