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The combined age of Frasier and Niles is 86 years. The combined age of Niles and Daphne is 74 years. The combined age of Frasier and Daphne is 78 years. Figure out each person’s age.
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解析：
根据题意，分别取其名字的第大写一个字母，可以得出如下的方程式：①F+N=86 ②N+D=74 ③F+D=78由①－②可以得出④F-D=12 由③－④可以得出D等于33,由此可知其他两人的年龄。
根据题意，分别取其名字的第大写一个字母，可以得出如下的方程式：①F+N=86 ②N+D=74 ③F+D=78由①－②可以得出④F-D=12 由③－④可以得出D等于33,由此可知其他两人的年龄。
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