Find the value of x in 10 : 20 :: 20 : x .
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Find the value of x in 10 : 20 :: 20 : x .
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Answer:
40 is correct........
Answer:
10/20=20/x
now cross multiplication
10x=20x20
=10x = 400
=X=400/10
=40
therefore x is equal to 40