Graeiousid
Answered

Jerry is  7  years older than Jennifer.  In three years Jerry will be twice as old as Jennifer.
Find their present ages.

Sagot :

Peachocoid
x=jerry
y=jennifer
x=y+7
3+x=2y

3+y+7=2y
3+7=2y-y
10=y
y=10

x=y+7
x=10+7
x=17