Aclass has 28students. the ratio of girls to boys is 4: 3. how many girls are in the class?

In a class of 28 students the ratio of girls and boys is 4:3. The number of girls in the class is 16.

Solution:  

Let us consider total number of students in the class is “T”.

Let the ratio of the students (Girl and boys) in the class is G: B.

Given that total number of students in class (T) = 28

From question, given that ratio of girls and boys is 4:3. We can write this ratio as,

Number of girls (G) = 4x and number of boys (B) = 3x

We have to find the number of girls in class. The total number of girls present in the class is given as ,

The total girl students present in the class G =

=

Hence the total number of girls in the class is 16.

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47