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NIMCET 2025 Paper

Section: Mathematics

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Question : 5 of 120

Marks: +1, -0

There are

4 0

2 0

male students in a class. If the average heights of female and male students are 5.15 feet and 5.66 feet, respectively, then the average height (in feet) of all the students in the class equals:

5.490
5.175
5.405
5.320

Solution:

Number of female students

=40

Number of male students

=20

Average height of females

=5.15\,\text{ft}

Average height of males

=5.66\,\text{ft}

Total height of female students:

40 \times 5.15 = 206\,\text{ft}

Total height of male students:

20 \times 5.66 = 113.2\,\text{ft}

Total height of all students:

206 + 113.2 = 319.2\,\text{ft}

Average height of all 60 students:

\; \frac{319.2}{60} = 5.32\,\text{ft}

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