I think the answer is D.Hope this helps!
Answer: 0.8
The volume is 8/45 so a•b•c=8/45
So 2/3•1/3•a=8/45
Multiply 2/3•1/3=0.222222 or 2/9
So 2/9•a=8/45
Divide 8/45 / 2/9= 0.8
a=0.8
Hope this makes sense and it helps!!
5*12=60 so the answer is A.
3 3/4 - 1 2/5 = 47/20 or 2.35 or 2 7/20 So the answer would also be A.
I hope this helps!!!!!!!!!!!