Then the equations can be obtained according to the meaning of the question: A-2=B+2.
2AB = (A-2)(B+2)
Solution: A=2* radical number 2+2, B=2* radical number 2-2 (positive value)
After testing, A B is the solution of the original equation (the equation should be tested, otherwise the teacher will deduct points! )
The price of a ticket is X yuan.
According to the meaning of the question: X+( 1/2)X*5-60%*6X=24.
Solution: X=240
So the price of a ticket is 240 yuan.
(1) Let's meet for the first time in x seconds.
Then 5.5X+4.5X=400.
The solution is X=40.
A: It takes 40 seconds to meet for the first time.
(2) It takes x seconds to catch up.
Then 4.5x+10 = 5.5x.
The solution is X= 10.
A: It takes 10 seconds to catch up.
(3) Set the first meeting of two people after x seconds.
Because a is faster than B.
So when they first met, A was almost in Otsuichi's circle!
Then 5.5x-400 = 4.5x.
X=400 seconds.
Hoo ~ ~ ~ It's finally over!
Give it to me ~