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I want to ask you a math problem of a function.
1, the analytical formula of OB is: Y= 1/3X. When Party A and Party B meet at point A for the first time, that is, X= 18, Y=6.

The analytical formula of 2.2. The CD is: Y=-9/20X+37. If you arrive on time and X=740/9, the total time is 740/9+5=785/9.

3, (6-1)/(80-18) = 5/62 This is the speed of B, (10- 1)/5/62=558/5, which is the second time that B meets A.

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