In city B & C, ratio of postgraduates is 7 : 8. Total population who is postgraduate in city B is equal to total population of city A. find ratio of non-postgraduate population in city B to that of city C.
Answer : Option D
Explanation : Postgraduate population in city B
= 300+400=700
Postgraduate population in city C
=
Required ratio = (1000−700)∶(900−800)
=300∶100=3∶1
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