Question

Logan is 2 years older than Lindsey .Five years ago, the sum of their age was 30 . Find Lindsey's current age

Answer 1

Lindsey=l
Logan=h
h=l+2
(h-5)+(l-5)=30
h-5+l-5=30
h+l-10=30
h+l=40
l+l+2=40
2l+2=40
2l=38
l=19
h=21
So Lindsey is 19

Hope this helps :)

Answer 2

x is 2 more than y
x=2+y

5 years ago (x-5 and y-5)
sum is 30
x-5+y-5=30
x+y-10=30

x=2+y
sub 2+y for x
2+y+y-10=30
2y-8=30
add 8 to both sides
2y=38
divide both sides by 2
y=19

Lindsey is 19