1) 4:5= 12:x, the value of x a) 10 b) 13 c) 14 d) 15 2) Given 2,4,16,8 arrange them to be proportion a) 2:4 = 16:8 b) 4:2 = 8:16 c) 2:8 = 4:16 d) 4:16 = 8:2 3) 2:3 = n:21, the value of n a) 10 b) 12 c) 14 d) 16 4) 3/4 = n/12, the value of n a) 6 b) 7 c) 8 d) 9 5) x:4 =9:x, the value of x a) 5 b) 6 c) 32 d) 36

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