Question 412437
Let {{{A}}} = the amount of money that you both
will have in {{{w}}} weeks
For me:
{{{A = 160 + 7w}}}
For my friend:
{{{A = 210 + 5w}}}
Set the 2 {{{A}}}'s equal
{{{160 + 7w = 210 + 5w}}}
{{{2w = 50}}}
{{{w = 25}}}
In 25 weeks you will both have the same amount
check answer:
{{{A = 160 + 7*25}}}
{{{A = 160 + 175}}}
{{{A = 335}}}
and
{{{A = 210 + 5*25}}}
{{{A = 210 + 125}}}
{{{A = 335}}}
OK