Question

i have a riddle : there are 2 armies , one army says to other that if u lend me 10 soldiers then we will become twice of ur soldiers and other army says to the first one that if u lend ur ten soldiers to us then we will become thrice of ur soldiers then find the numbers of soldiers of both armies ?​

Answer 1

Answer:

let 1 army be x

2 army be y

A.T.Q

2x=y+10

=>y-2x+10=0------(Eq1)

3y=x+10

=>-3y+x+10=0------(Eq2)

multiple eq 1 by 3

=>3y-6x+20=0

+(-3y)+x+10=0

-5x=-30x=6

Please mark as the brainliest!!!!!!!!!!!