IKMC 2027 - Grades 11-12 - Self-study SET 7 - Thematic Batch 3 Question 7

While practising Kangaroo problems, Marry can solve each 3-point problem in 2 minutes, each 4-point problem in 4 minutes, and each 5-point problem in 6 minutes. What is the greatest total score she can obtain in 75 minutes?