Suppose Hans bought x apples, with//remarks: Seth bought (x- 10) apples, Mike bought (x-26) apples, and Johnson bought (x-32) apples. There are all these apples, with a total of 144 apples.

x+(x- 10)+(x-26)+(x-32)= 144

4x-68= 144

4x=2 12

Hans bought 53 apples.

Of course, you can also assume that Seth bought X apples and Hans bought (x+ 10), and then on this basis, Mike bought (x+ 10-26), that is, (x- 16) and Johnson bought (x+/kloc-0).

Generally speaking, it is most convenient to set the problem as unknown X.