The average of four people of Taro, Jiro, Hanako and Fujiko was 59 points on a certain test.
In addition, the average of two people of Jiro and Fujiko was 58 points.
The average of three people of Taro, Jiro and Hanako was 60 points.
Find a score of Jiro.
Answer
60 points
Solution
Total score of Taro, Jiro, Hanako and Fujiko was 59 × 4 = 236 points.
Total score of Taro, Jiro and Hanako was 60 × 3 = 180 points.
Thus the score of Fujiko was 236 - 180 = 56 points.
Since total score of Jiro and Fujiko was 58 × 2 = 116 points, Jiro's score was 116 - 56 = 60 points.
