There are 680 students in a school.
There are 680 students in a school. The ratio of boys and girls in this school is 3:5. Find the total of girls & boys are there in this school?
Answer/Solution
425
Steps/Work
In order to obtain a ratio of boys to girls equal to 3:5, the number of boys has to be written as 3 x and the number of girls as 5 x where x is a common factor to the number of girls and the number of boys. The total number of boys and girls is 680. Hence
3x + 5x = 680
Solve for x
8x = 680
x = 85
Number of boys
3x = 3 × 85 = 255
Number of girls
5x = 5 × 85 = 425
A
3x + 5x = 680
Solve for x
8x = 680
x = 85
Number of boys
3x = 3 × 85 = 255
Number of girls
5x = 5 × 85 = 425
A