actually TS lain lain man ug rules ang mga tindahan on how they will serve the 20% discount. try sa robi foodcourt ang usual tagaan nila ug 20% discount kay worth 200php. Second thing ang food na pwede ma consume sa isa ka senior citizen.
Ex1: One senior citizen purchase a pancit good for 5 person worth 500php. Now since good for 5 person man to and only 1 senior citizen ila na i split ang discounting to 5. so only 100 pesos are subject to 20% dsicount kay dili man sad pwede mahurot sa 1 SC ang worth 5 person na pancit.
Ex2. In a group of 4 person who dine in a restaurant naay 2 ka SC.. ang ila bill is worth 2,400. Since naa man 2 ka SC sa group ila gi divide ug 2 and bill na worth 2,400php. Then the result which is 1,200 is subject for 20% discount 240php. So 1,200 + [(1,200 - 240 = 960] = 2,160php na ang ilang final bill.
And these systems is applied to all restaurant and foodchain na akoang na adtoan.. Maybe naa sad uban tindahan na lahi siguro ang paagi.