Question 1170656
One pound of apples is ${{{2}}}. 

so you can buy {{{x}}} apples and spend  ${{{2*x}}}

if you have {{{no}}}{{{ more}}} than ${{{13}}} to spend on apples, then

{{{2*x=13}}}
{{{x=13/2}}}
{{{x=6&1/2}}}

answer: you can buy {{{6&1/2}}}  pounds of apples