The length of copper pipe K is
45 of the length of copper pipe N and the length of copper pipe N is
13 of the length of copper pipe L and
13 of the length of copper pipe M. What fraction of the total length of the 4 copper pipes is copper pipe M?
K |
N |
L |
M |
Total |
4x1 |
5x1 |
|
|
|
|
1x5 |
3x5 |
|
|
|
1x5 |
|
3x5 |
|
4 u |
5 u |
15 u |
15 u |
39 u |
The length of copper pipe N is repeated. Make the length of copper pipe N the same. LCM of 5 and 1 is 5.
Total length of all the 4 copper pipes
= 4 u + 5 u + 15 u + 15 u
= 39 u
Copper Pipe MTotal Length =
1539 =
513Answer(s):
513