Question 1207798

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let Rico's age be {{{R}}} and Maris's age {{{M}}}

if Rico's and Maris's age gap is {{{25}}} years, we have

{{{R-M=25}}} .......eq.1

if {{{4}}} years from now, Rico's age will be {{{5}}} years less than twices maris's age, we have

{{{R+4=2(M+4)-5}}} 
{{{R+4=2M+8-5}}}
{{{R=2M+3-4}}}
{{{R=2M-1}}}.........eq.2

go to
{{{R-M=25}}} .......eq.1, substitute {{{R}}}

{{{2M-1-M=25}}} 
{{{M=25+1}}} 
{{{M=26}}} 

go to

{{{R=2M-1}}}.........eq.2, substitute {{{M}}}
{{{R=2*26-1}}}
{{{R=52-1}}}
{{{R=51}}}

answer:

Rico is {{{51}}}  and Maris is {{{26}}}