Answer:
5
Step-by-step explanation:
Using fractions:
[tex]2\frac{1}{2}[/tex] = [tex]\frac{5}{2}[/tex]
[tex]\frac{5}{2}[/tex] + [tex]\frac{5}{2}[/tex] = [tex]\frac{10}{2}[/tex]
[tex]\frac{10}{2}[/tex] = 5
Using decimals:
[tex]2\frac{1}{2}[/tex] = 2.5
2.5 + 2.5 = 5