Hanna has completed 5 spelling tests and her mean score is 15. The spelling tests all contained 20 questions he scores for 4 of the test were 17,15 ,18, and 10. What was her score for the 5th test.

Question

could you pls send me the answer as soon as possible.

Answer 1

Let her score in the fifth test be x.

(17+15+18+10+x)/5=15

(60+x)/5=15

60+x=75

x=75-60

x=15

Hanna scored 15 marks in the fifth test.