11. Additions and reductions as percentages Jaa Sulje 1/15 Exercise 15.48 Avaa lomake 1/15 Exercise 15.49 Avaa lomake 1/15 Exercise 15.50 Avaa lomake 1/15 Exercise 15.51 Avaa lomake 1/15 Exercise 15.52 Avaa lomake 1/15 Exercise 15.53 Avaa lomake
