20:9: :21:?
find the value of ?..
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Mathematics
Pro. of ext. = Pro. of mean
20× ? =. 21 × 9
? =. (21 × 9)/20
? =. 9.45 Ans.
Reasoning
20 : 9
21 : ?
20 + 1 = 21 :. 9 + 1 = 10
21 : 10
Ans...
patelsahab2809p37fjs:
ans= 10
you can try
ans is 9.45
you can try again this question is related about reasoning not mathematics...
ohh
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