Question

there are 60 boys in year 9 of whom 24 study chemistry what percentage of year 9 boys study chemistry?

Answer 1

Answer:

Hence the percentage of year 9 boys study chemistry is $40$%

Step-by-step explanation:

As per the information provided in the question is as follows.

We have 60 boys in year 9  of whom 24 study chemistry,

We have to find the percentage of year 9 boys study chemistry.

We will use the formula of percentage

   percentage%= $\frac{value}{total \:value}\times100$

We will substitute the value in  equation

%=$\frac{24}{60}\times100$

We will divided numerator and denominator by 12 we get,

%=$\frac{2}{5}\times100$

We will divide 2 by 5,we get 0.4

%=$0.4\times100$

Then we will multiply 0.4 by 100 ,we get 40

$=40$%

Hence the percentage of year 9 boys study chemistry is $40$%