Problem: tabby is training for a triathlon . she swims at a speed of 1 mile per hour . she runs at a speed of 10 miles per hour . she wants to figure out her average speed for these two events . what is the correct answer for her ?
Rationale: ( 1 mph + 10 mph ) / 2 = 5.5 mph correct option is : b
annotated_formula: divide(add(1, 10), const_2)