Respuesta :

2.15 + 2.5 = 2.65
2.65 + 3.85 = 6.40
If it is 0.5
6.40 + 0.5 = 0.9
If you meant 0.05
6.40 + 0.05 = 6.45
If you meant 5 (as in the whole number)
6.40 + 5 = 11.40

hope this helps 
2.15+2.5+3.85+0.5=2.15+3.85+2.5+0.5=6+3=9
ACCESS MORE
EDU ACCESS