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Quantitative Aptitude

Mixture & Alligations

90 students r...

Question

90 students represent x percent of the girls at Bangalore High School. If the girls at Bangalore High School make up 40% of the total school population of x students, what is x?

A

125

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B

150

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C

225

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D

250

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Solution

The correct option is B
150

Let x be the number of students, let n be the number of girl: then 40/100x=n & 90=x/100n. Thus, x=150

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