In a school there are 150 students. Out of which 1/3 are girls. There are 45 teachers and out of which 1/5 are male teachers. What is the ratio of number of boys to number of female teachers.

Answer: D. 25/9

The correct answer is D. 25/9.
Step 1: Total boys = 150 students - (1/3 of 150) = 150 - 50 = 100 boys.
Step 2: Female teachers = 45 total - (1/5 of 45) = 45 - 9 = 36 female teachers.
Step 3: Ratio = 100 / 36; simplified by dividing both by 4 = 25 / 9

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