" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
U1 = a = 20
U2 = a+b= 25
dapet b = 5
ditanya jarak 45 km brp? 45km adalah U15
jadi U15=a+14b = 20+14(5)= 20+70=90