Question 922336
let x be the age of dorothy and y is the age of dorilyn, then
x + y = 41
x +5 = 2(y +5)
solve first equation for y
y = 41 - x
substitute for y in second equation
x + 5 = 2(41 - x +5)
x +5 = 2(46 - x)
x +5 = 92 -2x
3x = 87
x = 29 and y = 12
therefore their ages 3 years ago are
dorothy is 26 and dorilyn is 9