Question 1199712
First sentence is bad!  Find the correct way your exercise was supposed to be written.


Here is probably the way the description was supposed to be written:

Kevin's age is twice as much as four times Jane's age.
The sum of their ages is 48.
k for Kevin, j for Jane
{{{system(k=2j,k+j=48)}}}

{{{2j+j=48}}}
{{{3j=48}}}
{{{j=16}}}-------and then k is 32,




Another possibility:
Kevin's age is two times more than four times Jane's age.
The sum of their ages is 48.
But this is still not good.
k for Kevin, j for Jane
{{{k=2j+4j}}}
{{{k=6j}}}
-
and then
{{{k+j=48}}}
{{{6j+j=48}}}
{{{7j=48}}}-------likely not what was intended, since j not a whole value.