" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
misal budi = y
x + y = 420.000
x - y = 280.000 => x = 280.000 + y
x + y = 420.000
280.000 + y + y = 420.000
2y = 420.000 - 280.000
2y = 140.000
y = 70.000
x = 280.000 + y
x = 280.000 + 70.000
x = 350.000
perb. uang budi dan doni
= 70.000 : 350.000
= 1 : 7 (B)