Maybe you meant solve for x?
If so, the answer is 4
Use m-a-t-h-w-a-y they are awesome. Or m-y-m-a-t-h-l-a-b
What goes in goes out. This means none of the current is lost. So if 0.7amps+0.68amps+0.47amps = 1.85 amps comes in, then 1.85 amps goes out. So far we have 0.8 amps+0.55 amps going out= 1.35 amps. This means we need an additional 1.85-1.35amps going out= 0.5 amps for the third outgoing current. Cheers!
B.
2/7
There are 2 A's out of 7 letters in total...