Answer:
[tex]\frac{7}{10}[/tex]
Step-by-step explanation:
Fraction of the amount donated to school library = [tex]\frac{2}{10}[/tex]
Fraction of the amount donated to animal shelter = [tex]\frac{1}{10}[/tex]
Fraction of the amount donated to food bank = [tex]\frac{4}{10}[/tex]
The rest of the amount was saved for next project.
Thus, the total fraction of the amount donated will be the sum of fractions of amount donated to school library, animal shelter and food bank.
i.e.
Fraction of the amount donated = [tex]\frac{2}{10}+\frac{1}{10}+\frac{4}{10} = \frac{7}{10}[/tex]
This means, Tyler and Katie donated [tex]\frac{7}{10}[/tex] of their profits.
