if a student has an average of 8 after 20 tests and then gets a 0 on his 21st test, what would his new average be?

Answer 1

8 * 20 = 160

160/21 = ?

Answer 2

x = total score of tests

x/20 = 8
x = 160

160/21 = 7.62 new average

Answer 3

thank you.