Question

Uang arman;uang boni =2:3 adapun uang boni :uang celia =4:5 jika jumlah uang mereka seluruhnya 420 ,berapakah uang masing masing anak?

Answer 1

A:b    = 2:3
   b:c =    4 : 5
= a:b:c = 8 : 12 : 15
a+b+c = 420

8x + 12x + 15x = 420
35x = 420
x = 420/35
x = 12

a = 8x = 8 x 12 = 96
b = 12x = 12 x 12 = 144
c = 15x = 15 x 12 = 180

*a=arman, b = boni, c = celia