First off, to find the number of male guests who wear glasses, you multiply the number of guest (35) by 40% (.4).
[tex]35(.4)=14[/tex]
Now just put the number of male guests wearing glasses (14) in fraction form over the total number of guests (56) and simplify.
[tex] \frac{14}{56} = \frac{7}{28} = \frac{1}{4} [/tex]
[tex] \frac{1}{4} [/tex] of the guests are males who wear glasses.
