Question
Ratio of males to females in village ‘A’ and village
‘B’ is 4:5 and 15:16, respectively and number of females in village ‘B’ is 25% more than that in village ‘A’. Find difference between number of males in villages ‘A’ and ‘B’ if number of males in village ‘B’ is 1500.Solution
Given: Male to female ratio in village A = 4:5. Male to female ratio in village B = 15:16. Number of females in village B is 25% more than in village A. Males in village B = 1500. Calculate females in village B: 
Number of females in village A:
Calculate males in village A:
Difference between males in village A and B = 1500−1024 = 476
Statements:
Some P are Q
All Q are R
Some R are S
Conclusions:
I. Some R are not P
II. All R are P
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