Opal had a ribbon of 260 cm long. She tied some balloons on the ribbon. Part of the ribbon and balloons were shown. Each balloon was 17 cm apart from one another.
- What is the length of the ribbon between the third and the twelfth balloon?
- Find the most number of balloons that could be tied on the 260 cm of ribbon with balloons at 17 cm apart from one another.
(a)
Number of intervals between the third and the twelfth balloon
= 12 - 3
= 9
Length of the ribbon between the third and the twelfth balloon
= 9 x 17
= 153 cm
(b)
Sets of 17 cm
= 260 ÷ 17
= 15 r 5
Most number of balloons
= 15 + 1
= 16
Answer(s): (a) 153 cm; (b) 16