Question

ajutoor! Dau 35 puncte!

Answer 1

1)30•2+16•3=108€ 2)(x/3-3)•5+3/10•3(1/3)•10=30 5•[(x-9)/3]+3/10•10/3•10=30 (5x-45)/3+10=30 5x-45=60 5x=105 x=21(obs:la 3(1/3) ai 3 intregi si 1/3 ;introduci intregii in fractie si obtii 10/3) 3)100-1/5•100=80€ 4)Suma pe care ar plati-o grupul fara reducerea de 15% este 2•30+16•20=380€.Aplicand reducerea de 15% ei vor trebui sa plateasca 85/100•380=323€