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 By: tictactoe (offline)  Tuesday, September 18 2012 @ 03:59 AM CDT (Read 1119 times)
tictactoe

The total length of two strings was 105cm. The difference in their lengths was 9cm. After cutting the same length of string from each piece, the length of the shorter piece became 2/5 of that of the longer piece. What was the length of string that was cut from each piece? (answer : 42cm)

Newbie

Registered: 07/28/12
Posts: 8

 By: eqkt (offline)  Tuesday, September 18 2012 @ 07:37 AM CDT
eqkt

Long Short Difference
Amount Left 5 units 2 units 3 units-> 9cm

1 unit---> 9cm/ 3= 3cm

Long ---> 3cmx5=15cm

Short---> 3cmx2=6cm

15cm+6cm=21cm
105cm-21cm=84cm
84cm/2=42cm (ans)

Junior

Registered: 03/18/10
Posts: 18

 By: tictactoe (offline)  Wednesday, September 19 2012 @ 02:11 AM CDT
tictactoe