Question 1162187

let's two numbers be {{{x}}} and {{{y}}}

if their sum is {{{72}}}, we have

 {{{x+y=72}}}.........eq.1

 if one number is twice the other, we have

{{{x=2y}}}.....eq.2

substitute {{{x}}} from eq.2 in eq.1

{{{2y+y=72}}}.........eq.1

{{{3y=72}}}

{{{y=24}}}

go to eq.2


{{{x=2y}}}.....eq.2, substitute {{{y}}}

{{{x=2*24}}}

{{{x=48}}}




so, the numbers are {{{24}}} and {{{48}}}