" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
jumlah kedua 3th mendatang 78th
6+3= 9
9x2= 18
maka jumlah umur mereka 6th lalu
= 78-18
= 60
umur A 2th lalu
=(3/5 x 60) - 2
= 36-2
= 34th
(a - 6) : (b - 6) = 3 : 2
2(a - 6) = 3(b - 6)
2a - 12 = 3b - 18
2a - 3b = -6
3 th yg akan datang
(a + 3) +(b +3) = 78
a + b + 6 = 78
a + b = 72 (kali 3)
3a + 3b = 216
2a - 3b = -6
3a + 3b = 216
------------------- +
5a = 210
a = 42 thn
Umur a 2 thn yg lalu = 40 th