Because e and f are neutral lines, EF//BG

∴ ∠G=∠GBC

∫BQ split ∠PBC

∴ ∠G=∠PBG

∴ BP=PG

∫CQ = 1/3EC

∴CQ:EQ= 1:2

Here we go again ∵ EF//BC

∴ CQ:EQ=BC:EG= 1:2

∴EG= 12

That is, EP+BP= 12.

Hope to help you, hope to adopt! !