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Hey, I got this message 7 times today from you as a "comment from student".
In response, I wish you to take 7 times your usual daily medications --- may be, it will help . . .
Also, I'd like to present a small lecture to you about using this form/window "Comments for students".
My lecture is in two positions.
1) Never use this form/window to post the problem/problems.
It is because this site works in such a way, that I don't know from whom this message came and to whom I should answer.
2) This form/window is intended for other purposes --- mostly to express the student's gratitude to the tutor for his or her
work and help.
Have a nice evening, nice night, nice morning, nice afternoon, nice day and nice tea time (!)
Regarding your problem, in the second day Kim earned the rest of money.
Which is absolutely clear even without my explanations . . .
This problem is of the complexity level of "2 x 2 = 4" , and a reasonable person would hesitate to post it to the forum . . .