1. Since those who won the first and second prizes accounted for three-eighths of the winners, those who won the third prize accounted for five-eighths (1-3/8) of the winners,
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Those who won the second and third prizes accounted for seven-eighths of the winners, so those who won the first prize accounted for one-eighth of the winners (1-7/8).
Those who won the second prize=1-5/8-1/8=2/8=1/4
That is, those who won the second prize accounted for a quarter of the winners. 1
2, 1-2/5-1/3=4/15
The area of ??pine and cypress accounts for four-fifteenths of the total area