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In a class, 15% of total number of students failed in Science, 5% of total number of students failed in Maths and 10% of total number of students failed in both.How much percentage of students passed in both Maths and Science?70%80%60%90%

Question

In a class, 15% of total number of students failed in Science, 5% of total number of students failed in Maths and 10% of total number of students failed in both.How much percentage of students passed in both Maths and Science?70%80%60%90%

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Solution

To find the percentage of students who passed both subjects, we need to subtract the percentages of students who failed from 100%.

First, add the percentage of students who failed Science and Maths:

15% (Science) + 5% (Maths) = 20%

However, the 10% of students who failed both subjects have been counted twice in this sum. So, we need to subtract this percentage:

20% - 10% (both) = 10%

Finally, subtract this percentage from 100% to find the percentage of students who passed both subjects:

100% - 10% = 90%

So, 90% of students passed in both Maths and Science.

This problem has been solved

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