Respuesta :
This is what I got when I added them 1/4+2 1/2= 2 3/4. I hope this helps.
1/4 = 0.25, and 2 1/2 is 2.50. 0.25 + 2.50 = 2.75, which is 2 3/4. It seems as if your answer choices are incorrect, the 5s should be 4s.