Question 154299
Reggie's age = "x+5"
why? because laarni's age = "x"
Five years ago:
{{{x+5-highlight(5)+x-highlight(5)=25}}} ----------------> working eqn
substract 5 yrs from their ages and sum up to 25.
Continuing:
{{{x+cross(5)-cross(5)+x-5=25}}}
{{{2x=25+5}}}
{{{cross(2)x/cross(2)=cross(30)16/cross(2)}}}
{{{x=15}}} -------------------------> Laarnis' age
{{{x+5=15+5=20}}} ------------------> reggie's age
To check, 5 years ago: Go back working eqn
{{{20-highlight(5)+15-highlight(5)=25}}}
{{{15+10=25}}}
{{{25=25}}}
Thank you,
Jojo