Question

Before beginning voice lessons, Christine already knew how to sing 4 pieces, and she expects to learn 2 new pieces during each week of lessons. After 23 weeks of voice lessons, how many pieces will Christine be able to sing, in total?

Answer 1

Since Christine already knew how to sing 4 pieces before taking the lessons we have to add these 4 at the end of the calculation.

If she learns 2 new pieces per week , after 23 weeks, she would learn 46 pieces.

Finally we add the initial 4 pieces, so the answer would be 50 pieces in total.