Respuesta :
Answer:
Step-by-step explanation:
You need to add the miles he biked to work and to the store that day in order to find to total number of miles.
6 3/4 - multiply 6 by 4 then add 3 and put the result on top of the fraction so it would be 27/4 then simply it to 6.75
3 2/5 you do the same thing with this one so it would be 17/5 = 3.4
Now you add those values together: 6.75 + 3.4 = 10.15 (total miles) or 10 3/20