If a person's birthday is August 18th when is their three quarter birthday?

May 18th becuaue there's 12 months in a year and 3/4 of 12=9. So just count 9 months after your birthday or to put it in simple terms

Just count 3 months before your birthday and that's your three-quarter birthday :)

ex: Say Kellie's birthday is January 25, then her three-quarter birthday would be: October 25th.

3/4 of 12=9

1+9=10

1/2 of 12=6

1+6=7

1/4 of 12=3

1+3=4

4, 7, and 10 notice the pattern?