Question

Susan and teo play soccer. Susan's team play every five days and twos team plays every six days when will the teams play on the same day

Answer 1

You're looking for the least common multiple of the numbers 5 & 6

that is . . . you're looking for the first time that a multiple of the value coincides with a multiple of the second value

multiples of 5
5
10
15
20
25
30
35
40
 . . .

multiples of 6
6
12
18
24
30
36
42
 . . .

as you can see, the first common multiple of both 5 & 6 is 30, so the answer is on the 30th day