Question 176350
Let Cora’s age be {{{x}}}
We know that Cora is {{{4}}} years older than Rose; so, her age is {{{x -4}}}.
We know that the sum of Cora and Rose age is {{{40}}}, we will set up an equation and find out what is {{{x}}} or Cora’s age.

{{{x+x -4=40}}}
{{{2x -4=40}}}
{{{2x = 40 + 4}}}
{{{2x = 44}}}
{{{x = 44/2}}}
{{{x = 22}}}……….. Cora is {{{ 22}}} old.

Rose is {{{22 -4=18}}}old.