Re: 2012 Year 9 &10 Mathematics Marathon
Lol I did it myself. Failed it however cos I was sick and everything so barely studied and such LOL and silly mistakes TT
Re: 2012 Year 9 &10 Mathematics Marathon
5 sisters are born on 2 year successive intervals. The eldest sister is twice the age of the youngest sister. What is the age of the 3rd youngest sister?