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DIY Challenge 4: 25 cows among 5 sons

A farmer needs to divide 25 cows among 5 sons.

The 1st cow gives 1L of milk, the 2nd cow gives 2L of milk….. and so on. The 25th cow gives 25L of milk.

How should the farmer divide the cows among his sons so that each one of them gets an equal number of milk?

What students worked out6

  • Student 1

    This is my answer

    • Student 1

      sorry wrong picture

      • Student 1

        This is my answer

  • Student 1

    I will explain another answer in class because my file is to large

    • Student 1

      This is my answer

  • Student 2

    1== 25+24+15+1
    2== 20+22+23
    3== 12+13+19+20
    4== 14+16+17+18
    5== 2-11(add all numbers in between)