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sumanta Panigrahi

· started a discussion

· 1 Months ago

DOUBT (Question: 187924.0 )

I think 8X + 10Y = 1300

Question:
The population of a town is 15,000. If the number of males increases by 8% and that of the females by 10%, then the population becomes 16,300. Find the number of females in town.
Options:
A) 4000
B) 6000
C) 3000
D) 5000 
Solution:
Ans: (d)


 

Knowledge Expert

· commented

· 1 Months ago

@chavali prakash solve it properly x= 5000

chavali prakash

· commented

· 1 Months ago

yes X=10000, Y=5000 GIVES THE RESULT

Knowledge Expert

· commented

· 1 Months ago

If the number of females be x, then number of males = 15000 – x
so x * 10/100 + (15000 –x) * 8/100
= 16300 – 15000
= 10x + 120000 – 8x
= 1300 * 100
=> 2x = 130000 – 120000 = 10000
=>x = 5000
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