City-wise population by males, females and transgenders in five cities A–E (some values are percentages, some are numbers).

City	Males	Females	Transgenders
A	45%	30%	2000
B	50%	3000	35%
C	8000	35%	15%
D	45%	3600	25%
E	38%	32%	4200

If the ratio of literate males to illiterate males of City D is 11:7, then what is the difference between the number of literate males and the number of illiterate males of City D?

A900

B1050

C800

D1200 ✓ Correct

Correct answer: (D) 1200

Explanation

The answer is 1200.

In City D the females are 100 minus 45 plus 25, which is 30 percent, and this equals 3600, so the total is 12000.

So the males in City D are 45 percent of 12000, which is 5400.

Splitting 5400 in the ratio 11 to 7 gives eighteen parts, so one part is 300.

The difference is 11 parts minus 7 parts, which is 4 parts, or 4 times 300.

That equals 1200.

So the answer is 1200.

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