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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 :)