Question

Brittany received 8 silver dollars on her eighth birthday. After her next birthday she had 15 and after the next she had 22. After her eleventh birthday she had 29 silver dollars. How many silver dollars will she have after her 16th birthday if her collection increases at the same rate every year?

Answer 1

Every year Brittany receives 7 silver dollars, therefore she will receive 64 silver dollars on her 16th birthday.

Answer 2

Ever year she gets 15 silver dollars, so she will have 64 silver dollars