Question
Last year the total number of students in a school was 4500. 48% of the total students were females. This year 60 males left the school. What is the present respective ratio between the number of males and the number of females in the schools

19 : 17

18:17

23:18

23:17

NONE OF THESE (Correct Answer)
Answer is
"NONE OF THESE"
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What is the correct solution?