I am a 3 digit number. my tens digit is 5 more than my ones digit. my hundreds digit is 8 less than my tens digit. what number am i?

3 digits

tens=one+5

hundreds=tens-8 - > hundreds+8=tens=one+5

our hundreds number is not 0, because it is a 3 digit number

hundreds=tens-8>0

when is tens-8>0?

tens>8, the only option is tens=9

then you can fill this into the other equations:

hundreds=tens-8

9-8=1=hundreds

tens=one+5

9=one+5

4=one

so the complete number is 194