Respuesta :
Answer:
5:1:4
70+5= 75
75+1=76
76+4=80
answer:80
Step-by-step explanation:
This question was actually kinda hard but i tried i added 5 which stands for Brian's amount of the ratio and added it to 70 which got me 75 then i added the rest to 75 and it got my 80.
