The total length of 2 ribbons and 3 strings is 322 cm. The length of a string is
12 of the length of the ribbon. What is the total length of the 3 strings?
|
Ribbons |
Strings |
Total |
Number |
2 |
3 |
|
Value |
2 u |
1 u |
|
Total value |
4 u |
3 u |
7 u |
Length of 2 ribbons and 3 strings
= 4 u + 3 u
= 7 u
7 u = 322
1 u = 322 ÷ 7 = 46
Total length of the 3 strings
= 3 u
= 3 x 46
= 138 cm
Answer(s): 138 cm