2+5=7 There will be a total of 7 parts.
2/7 of 252 will be one part
and
5/7 of 252 will be the other part.
You can finish it yourself. If you doubt your answer than you can ask if it is correct.
Melody , this question has already been answered out here!i dont know why people repost instead of clearing their doubts!Heres it!
http://web2.0calc.com/questions/separate-252-into-two-parts-using-the-ratio-2-5