Question

What is the missing number?
7/18= 21/?
A.3
B.32
C.44
D.54

Answer 1

D 0.54

Explanation:

7/18 = 0.389

21/0.54 = 0.389

Use a calculator to if you're unsure or want to double check. (PS. I used it)

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Answer 2

7x3=21

18x3=54.

Hope it helps you...