The LCM of 15 and 18 is 90
18
No, 15 and 24 do not go into 18. When we say a number "goes into" another, we typically mean that the second number is divisible by the first without a remainder. In this case, 18 is less than both 15 and 24, so neither can divide into 18.
18 R 15
15 out of 18 or 15/18 = 83.33%
The LCM of 15 and 18 is 90
90 = 15 x 6 = 18 x 5
18
27
3
any multiple of 90
90
18
15-18 year olds go to the Lycée (masc.) which is the equivalent of senior high schools.
If that's 18 and 115 then the greatest common factor is 1
18 R 15
15 with remainder 5.