Answer:
272
Step-by-step explanation:
-8--280=272
a=15x; b=8x; c=13x
180°=a+b+c=15x+8x+13x=36x
=> x=180÷36=5
=> a=15×5=75°; b=8×5=40°; c=13×5=65°
you did not supply enough information
Answer: $241.16
----------- APEX :)