jcdans
Oct 15, 2011, 05:10 AM
Edwin is four times as old as Joshua. In 12 years, Joshua's age will be half that of Edwin's. How old are they?
Unknown008
Oct 15, 2011, 07:02 AM
Assign variables to their age.
Let the age of Edwin be e and that of Joshua be j.
Edwin is 4 times as old as Joshua;
e = 4j
You need to multiply Joshua's age by 4 to get them to equal each other.
In 12 years, Joshua's age will be half that of Edwin.
(e+12) = 2(j+12)
Does that make sense?
Can you post back with your answer? It is just a matter of simultaneous equations :)