Question

Divide 84 in the ratio of 7:5

Answer 1

Let the ratios be 7x and 5x
7x+5x=84
12x=84
x=84/12
x=7
Two numbers
7x=7x7=49
5x=5x5=25

Answer 2

let ist number be =x

then other number be = 84-x


now. x/84-x. = 7/5

now 5x =. 7(84-x)

5x. =. 588-7x

5x+7x=. 588

12x. =. 588

x=. 588/12

x=. 49


now other number =84-x
84-49. = 35