The total length of 5 wires and 9 threads is 396 cm. The length of a thread is
23 of the length of the wire. What is the total length of the 9 threads?
|
Wires |
Threads |
Total |
Number |
5 |
9 |
|
Value |
3 u |
2 u |
|
Total value |
15 u |
18 u |
33 u |
Length of 5 wires and 9 threads
= 15 u + 18 u
= 33 u
33 u = 396
1 u = 396 ÷ 33 = 12
Total length of the 9 threads
= 18 u
= 18 x 12
= 216 cm
Answer(s): 216 cm