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24:x = 6:5
x=24×5/6
x= 12×5/2
x=30

[tex]1) \: \frac{6}{5} = \frac{24}{x} \\ x = 24 \times 5 \div 6 = 20[/tex]
2) B = 3b
B + b = 32.000
3b + b = 32.000
4b = 32.000
b = 8.000
B = 24.000

3) misal B > M
B - M = 9, maka M : B = 5 : 8 -----》M = 5/8 × B
5/8
B - 5/8 × B = 9
3/8 × B = 9
B = 72/3 = 24
M = 15

4) A : B : C = 5 : 4 : 1
A + B + C = 150
A = 5/10 × 150 = 75
B = 4/10 × 150 = 60
C = 1/10 × 150 = 15

5) T : M = 4 : 5
M = 5T/4 = 5 × 240 ÷ 4 = 300