Question

Diketahui a:b 3:5 b-a = 18 tentukan nilai a dan b

Answer 1

A:b = 3:5
b-a = 18

=> b-a = 5x-3x = 18
     2x = 18
     x = 9

=> a = 3x
     a = 3.9
     a = 27
    
     b = 5x
     b = 5.9
     b = 45

Answer 2

A/b = 3/5 ----> a = (3/5)b
substitusi nilai a di atas ke persamaan :
b -a = 18
b - (3/5)b = 18
(2/5)b = 18
b = (5 x 18)/2 = 45
substitusi b = 45 ke persamaan :
a = (3/5)b = (3/5)(45) = 27