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Everyone loves to learn Chinese math problems.
Suppose there are x people in the class, then the number of people who love math =0.6X, the number who love Chinese =0.5X, and the number who love neither = 0.05x. ..

Suppose the number of people in love is y,

Number of people who love both = number of people who love math+number of people who love Chinese+number of people who don't love both-the whole class.

So Y=0. 15X.

The ratio of people who like both subjects and people who don't like both subjects =3: 1.