Question

Yaping played 5 rounds of golf and her mean score was 80. Ken played 4 rounds of golf. If both Yaping and Ken have the same sum of golf scores, what was Ken’s mean score?

Answer 1

The mean score for Ken was 100.

Explanation:

The mean score is given by the sum of the scores in each round by the number of rounds played. So for Yaping the mean score is:

`\text{mean}_{\text{Y}} = \frac{\text{sum}}{5}\\\frac{\text{sum}}{5} = 80\\\text{sum} = 5*80 = 400`

So the sum of the scores for Yaping was 400, since Ken had the same sum of score we can use that number to find his mean as shown below:

`mean_(K) = (400)/(4) = 100`

The mean score for Ken was 100.