Insurance company deducts $300 per month.
Statement 1: On April 15 during the tour, Bin's account twice as much money as Joern's account.
Let;
Joern's account = $10,000
Bin's account = $10,000 * 2 = $20,000
Insurance deducts = $300 * 4 months = $1,200
Joern's balance = $10,000 - $1,200 = $8,800
Bin's balance = $20,000 - $1,200 = $18,800. Bin's account had more money.
Therefore, statement 1 is SUFFICIENT.
Statement 2: On June 15, during the tour, Bin's account had four times as Joern's account.
Let;
Joern's account = $10,000
Bin's account = $10,000 * 4 = $40,000
Insurance deducts = $300 * 6 months = $1,800
Joern's balance = $10,000 - $1,800 = $8,200
Bill's balance = $40,000 - $1,800 = $18,200. Bin's account had more money. Hence, statement 2 is SUFFICIENT.
In conclusion, both statements alone are SUFFICIENT.
Answer = option D