Final answer:
Answer= 60 points. To find the mean score of their last 4 matches, multiply the mean score by the number of matches and subtract the total score after 10 matches from the total score after 14 matches.
Step-by-step explanation:
To find the mean score of their last 4 matches, we can first find the total score after 14 matches by multiplying the mean score by 14: 50 * 14 = 700 points.
Next, we can subtract the total score after 10 matches from the total score after 14 matches to find the total score of the last 4 matches: 700 - (46 * 10) = 700 - 460 = 240 points.
Finally, we divide the total score of the last 4 matches by 4 to find the mean score: 240 / 4 = 60 points.