Mix design of Concrete: General and IS Method

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Sir, many thanks for enlightening with the nuances of mix proportioning. Two queries: 1. In some questions by IS 10262 method, the given data in the exam question is say, 0.9 or so, CF as workability, not in terms of slump. But, T-2 is in terms of slump. So, how to convert CF into known slump to be able to use T-2 of 10262, to proceed for max. Which table should be used from IS: 456 or IS 10262, for conversion?
2. If u can kindly add an example of mix proportioning in DOE method.

dipendrabhowmick
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Sir im s.naveen raj im civil engineering student can you please clarify my doubt in volume of dry concrete=1.5*volume of wet concrete 

Hows  that  1.5 comes sir  will u please explain in comment sir

And is that details available in anycode book sir

RAJ-lclg
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what is Water content for slump less than 25 mm???

pks