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Below is a chart given for the number of
students from different departments in
Technical / engineering college for the year
2019. The proportion of male to female
students in each department is 5:4. There are
40 males in Electrical Engineering. What is
the difference between numbers of female
students in the Civil department and the
female students in the Mechanical
department?
*
Electrical
20%
Mechanical
Computer
science
20%
Civil
30%

Below is a chart given for the number of students from different departments in Technical engineering college for the year 2019 The proportion of male to femal class=

Respuesta :

Answer:

32

Step-by-step explanation:

From the chart

  • Electrical 20%
  • Mechanical 10%
  • Computer science 20%
  • Civil 30%

Male: Female=5:4

Number of Males in Electrical Engineering=40

Let the total population of the student=x

Therefore:

[tex]\dfrac59 \times 20\%$ of x=40[/tex]

5*0.2x=40*9

x=360

Number of Females in the Civil Department

[tex]=\dfrac49 \times 30\%$ of 360[/tex]

=48

Number of Females in the Mechanical Department

[tex]=\dfrac49 \times 10\%$ of 360[/tex]

=16

Difference in the number of females

=48-16

=32

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