The total length of 8 ribbons and 2 strings is 396 cm. The length of a string is
18 of the length of the ribbon. What is the total length of the 2 strings?
|
Ribbons |
Strings |
Total |
Number |
8 |
2 |
|
Value |
8 u |
1 u |
|
Total value |
64 u |
2 u |
66 u |
Length of 8 ribbons and 2 strings
= 64 u + 2 u
= 66 u
66 u = 396
1 u = 396 ÷ 66 = 6
Total length of the 2 strings
= 2 u
= 2 x 6
= 12 cm
Answer(s): 12 cm