Dorothy acquired a 100% interest in two passive activities: Activity A in January 2010 and Activity B

Question:

Dorothy acquired a 100% interest in two passive activities: Activity A in January 2010 and Activity B in 2011. Through 2013, Activity A was profitable, but it produced losses of $200,000 in 2014 and $100,000 in 2015. Dorothy has passive income from Activity B of $20,000 in 2014 and $40,000 in 2015. After offsetting passive income, how much of the net losses may she deduct?