" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Anggap saja Bu Dina = D, dan Rita = R.D - 4 = 5(R - 4).
D - 4 = 5R - 20.
D = 5R - 20 + 4.
D = 5R - 16.
D + 14 = 2(R + 14).
D + 14 = 2R + 28.
D = 2R + 28 - 14.
D = 2R + 14.
5R - 16 = 2R + 14.
5R - 2R = 14 + 16.
3R = 30.
R = 30/3.
R = 10.
D = 2R + 14.
D = 2(10) + 14.
D = 20 + 14.
D = 34.
Jumlah umur Bu Dina dan Rita sekarang = R + D.
Jumlah umur Bu Dina dan Rita sekarang = 10 + 34.
Jumlah umur Bu Dina dan Rita sekarang = 44 Tahun (B).
Dina = a
Rita = b
Diket :
a-4 = 5(b-4)
a+14 = 2(b+14)
Jawab :
a-4 = 5(b-4)
a-4 = 5b-20
a-5b = -20+4
a-5b = -16
a+14 = 2(b+14)
a+14 = 2b+28
a-2b = 28-14
a-2b = 14
a-5b = -16
a-2b = 14
-------------(dikurang)
-3b = -30
b = -30/-3
b = 10
a-2b = 14
a = 14+2(10)
a = 14+20
a = 34
Jumlah Dina dan Rita
= a+b
= 10+34
= 44 tahun
Maaf jika ad kesalahan :)