Question

In a school 5/9 students are boys and 512 girl. Find the boys number

Answer 1

total student in class = 9

5 boys : 4 girls

5 : 4

X : 512

X = 512 × 5
------------
4

X = 2560/4 = 640

number of boys = 640

Answer 2

Answer:

640 answer

Step-by-step explanation:

Let the number of students =be x

number of boys =5/9

5/9 of x = 5x/9

number of girls = 5x -x = 4x/9

but the number of girl = 512

therefore 4x/9 = 512

4x=4608

therefore x= 4608/4

= 1152

total no of students =1152

the number of boys =5/9 of 1152

5/9 ×1152

5760/9

= 640 answer

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thanks......