In two days QURINESHA exercises 50 minutes at this rate how many minutes does she exercise in four weeks?

In two days, Qurinesha exercises 50 minutes. Therefore, she exercises 50/2 = <<50/2=25>>25 minutes per day.

In four weeks, there are 4*7 = <<4*7=28>>28 days.
Therefore, she exercises 25*28 = <<25*28=700>>700 minutes in four weeks. Answer: \boxed{700}.