" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
rata" 12 = 7, 5
rata" 8 = (20× 7, 25) - (12×7, 5)
= 145 - 90
= 55
rata" = 55/8
= 6, 875
___________
20
7,25.20 = 90 + 8n
145 = 90 + 8n
145-90 = 8n
55 = 8n
n = 55/8 = 6,875 atau 6,9