O-level Mathematics Nov 08 paper 1 questn 6

[dasani]

A wooden plank as cut into three pieces in the ratio 2:5:1
The lenght of the longest piece is 125cm.

Find
(a) the lenght, in centimetres, of the shortest piece.
(b) the total length, in metres, of the plank.



Please help

 

[Sijan92]

(a) 5= 125, 1=125/5= 25

(b) length of the medium= 125/5 *2= 50. Thus the total length=125+25+50=200cm=2m

 

[dasani]

thanks