Ask Question
14 March, 13:05

Rueben has scored 81, 89, 90, 83, and 77 on his previous five tests. what score does he need on his next test so that his average (mean) is 82?

+3
Answers (1)
  1. 14 March, 13:29
    0
    Let x = the next score

    If (81 + 89 + 90 + 83 + 77 + x) : 6 = 82

    ⇒ 420 + x = (82 * 6)

    ⇒ x = 492 - 420

    x = 72

    Thus to get an 82 average he need to get 72 on his next test.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Rueben has scored 81, 89, 90, 83, and 77 on his previous five tests. what score does he need on his next test so that his average (mean) is ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers