Question

the ratio of boys and girls is 12:5. If the number of girls is 840. the total strength of the school is

Answer 1

girls =5x=840
5=840/5=168
boys=12x=12×168=2016
total strength of school =2016+840
=2856

Answer 2

Answer:

Total number of students in the school are 2586.

Step-by-step explanation:

Given:

Ratio of the boy and girl = 12 : 5

Number of girls in the school = 840

To find: Total number of student in the school.

Let 12x be the number of boys in the school and 5x be the number of girls in the school.

According to the question,

5x = 840

x = 840/5

x = 168

So, Total number of student in the school = 12x + 5x = 12 × 168 + 840 = 2016 + 840 = 2856

Therefore,  Total number of students in the school are 2586.