Answer :
A+B=$101 billion
A=B+$47 billion
2B+$47 billion=$101 billion.
2B=$54 billion
B=$27 billion
A=B+$47 billion
A=$74 billion.
A=B+$47 billion
2B+$47 billion=$101 billion.
2B=$54 billion
B=$27 billion
A=B+$47 billion
A=$74 billion.