Answer :
[tex]5 \frac{15}{30}=5 \frac{15 \div 3}{30 \div 3}=5 \frac{5}{10}=\boxed{5.5}[/tex]
The answer is 5.5 because it simplifies to 5 1/2. 5 = 5 and 1/2=.5 so just combine the two and you get 5.5!