On mathematics Batyrkhan wants to present to mom flowers if he buys 3 gladioluses he will have 230 tenges if he buys the 5th gladiolus it will have 50 tenges

75
(230-50): 2=90 90*5+50=500 tengeesl 3 gladioluses - will remain 230 tengeesl of 5 gladioluses - will remain 50 tengevsy - Tenge230-50=180/2=90 90*5=450
290
Answer add