Richie's average on his math tests was 64%. On the next test he had a mark of 76%, and this raised his overall average to 67%. When he wrote the next test after this his average improved again by
1%. What mark did he get on the last test?
A) 68%
B) 69% C) 70%
D) 71% E) 72%

Jody bought 20 shares of amazon at the close price of $121.00. she bought 20 more shares a year later at the price of $127.00. two years later, she sold all of her shares at the price of $133.00. her broker charges $50 for each transaction. after all of these transactions, how much money did jody make?