Question

1. A : B = 2 : 3 , B : C = 3 : 5 , jika B = 30 , maka nilai A + C = ...

Answer 1

A : B = 2 : 3
B = 30
A : 30 = 2 : 3
3A = 60
A = 20

B : C = 3 : 5
30 : C = 3 : 5
3C = 150
C = 50

Jadi A + C = 20 + 50 = 70
Gunakan perkalian silang

Answer 2

A:b=2:3
a=2b:3
=2( 30 ) : 3 =20
c=5b : 3
=5 ( 30 ) : 3 =50
a + c = 20+50= 70
jdi hasilnya 70