The total length of 4 wires and 2 threads is 342 cm. The length of a thread is
19 of the length of the wire. What is the total length of the 2 threads?
|
Wires |
Threads |
Total |
Number |
4 |
2 |
|
Value |
9 u |
1 u |
|
Total value |
36 u |
2 u |
38 u |
Length of 4 wires and 2 threads
= 36 u + 2 u
= 38 u
38 u = 342
1 u = 342 ÷ 38 = 9
Total length of the 2 threads
= 2 u
= 2 x 9
= 18 cm
Answer(s): 18 cm