Question

The total number of students in grade 3 , 4 and 5 are 520 , if the ratio of the three grades are 4:3:6 . find the number of students in each grade.​

Answer 1

Answer: 129.9 students in grade 3.

173.2 students in grade 4.

216.5 students in grade 5.

Step-by-step explanation: Let the ratio be x

So 3x , 4x and 5x

3x+4x+5x = 520

12x = 520

1x = 520/12 = 43.3

Hence

3x = 3*x = 129.9

4x = 4*x = 173.2

5x = 5*x = 216.5

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