Question

in school 5_7 of the student are boys. if there are 300 girls, find the number of boys in the school​

Answer 1

Answer:

750

Step-by-step explanation:

total no of student = x

then no of boys is x*5/7 =5x/7

then no of girl is x- 5x/7= (7x-5x) /7 =2x/7

now 2x/7 =300 (as mentioned)

so x= 300*7/2

and 5x/7 (boy) = 300 * 7/2 * 5/7 =750

Answer 2

ATQ

total no. of students = x

and no. of boys = 5x/7

so, no. of girls = x-(5x/7)

300 = x-(5x/7) _____ (given)

(7x-5x) 7 = 300

2x = 300 ×7

x = 1050

Hence, no. of boys = 5x/7

= (5×1050)/7

= 750

Hope! this will help you.

please mark me as brainliest.