Question

.Andy is eleven years older than his wife Lori. If Andy and Lori's ages add up toeighty-one, how old are Andy and Lori

Answer 1

For this case we can create the following notation:

x= Andy age

y = Lori Age

And from the conditions we have this:

x + y= 81

x= y +11

Replacing the second equation in the first one we got:

y+11+ y= 81

2y = 81-11

2y = 70

y= 35

And solving for x we got:

x = 35+11 = 46

Andy age = 46

Lori age = 35