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15-06-2021
Mathematics

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In a math class, 9 pupils receive a grade of 90. If 18% of the class got 90, how many pupils are there in a class?

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15-06-2021

Answer:

Let the total number of pupil be x.

Given that,

Number of pupils that received a grade of 90=9

Percentage of pupil that receive a grade of 90=18%

So,

18% of x=9

18x/100=9

x=50

Hence, there are 50 pupils in the class.

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