The total length of 3 streamers and 9 ropes is 312 cm. The length of a rope is
15 of the length of the streamer. What is the total length of the 9 ropes?
|
Streamers |
Ropes |
Total |
Number |
3 |
9 |
|
Value |
5 u |
1 u |
|
Total value |
15 u |
9 u |
24 u |
Length of 3 streamers and 9 ropes
= 15 u + 9 u
= 24 u
24 u = 312
1 u = 312 ÷ 24 = 13
Total length of the 9 ropes
= 9 u
= 9 x 13
= 117 cm
Answer(s): 117 cm