The total length of 8 ribbons and 3 threads is 387 cm. The length of a thread is
15 of the length of the ribbon. What is the total length of the 3 threads?
| |
Ribbons |
Threads |
Total |
| Number |
8 |
3 |
|
| Value |
5 u |
1 u |
|
| Total value |
40 u |
3 u |
43 u |
Length of 8 ribbons and 3 threads
= 40 u + 3 u
= 43 u
43 u = 387
1 u = 387 ÷ 43 = 9
Total length of the 3 threads
= 3 u
= 3 x 9
= 27 cm
Answer(s): 27 cm
