tolong dijawab yg bener yahhh

uang Rosa = 3/3+1 ×Rp 45.000
= 3/4×Rp 45.000
=Rp 33.750

Rosa : Fahmi = 3 : 1

Rosa = 3 /4 x 45.000
         = 135.000 / 4
         = 33.750

semoga membantu :)