Question

Linda has scored 84, 93, 91, and 60 on her previous four tests. What score does she need on her next test so that her average (mean) is 82?

Answer 1

She needs to score 82

Explanation:

Mean of five test scores = 82

Let the score she got in fifth test = x

`(84+93+91+60+x)/(5)=82\\\\(328+x)/(5)=82\\\\328+x=82*5\\\\328+x=410\\\\x=410-328\\\\x=82`