Solving the Excel Challenge

Employer
[no-member:pro]Sergey[/no-member:pro]
Project parameters
Type of cooperationOne-time project
SectionEducation and consulting
Prepaymentwithout prepayment
Payment methodsBank transfer, Electronic money
Acceptance of requestsfrom Jul 4, 2019 until Jul 6, 2019
Project description
You need to solve the problem with a full explanation of what is happening, with the highlighting of individual colors: green - variables, blue - constraints, red - target function.