Question

in a class 4/9 of students are boys and 775 students are girls find number of boys in class​

Answer 1

Answer:

620

Step-by-step explanation:

boys - 4/9

girls - 5/9

METHOD 1

= 775/5 ×4

= 620

METHOD 2

total number of students,

= 775/5 × 9

= 1395

number of boys,

= 1295 - 775 =

= 620

Answer 2

Answer:

Number of boys in the class are 620

Step-by-step explanation:

Let No. of boys = x

Total no. of students in the class = y

we know that total boys in class 4/9 of total students

no. of boys we can write as, x = 4/9y

sol :- Total Students = Boys + Girls (or)

y = x + 775 ----(1)

y = 4/9y + 775

y - 4/9y = 775

5y/9 = 775

y = 775(9/5)

y = 155*9

y = 1395

Total no. of students are 1395

No. of boys are => y = x + 775 ( from 1)

=> 1395 = x + 775

=> x = 620