Sabrina had a ribbon of 180 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 fifth and the thirteenth balloon?
- Find the most number of balloons that could be tied on the 180 cm of ribbon with balloons at 17 cm apart from one another.
(a)
Number of intervals between the fifth and the thirteenth balloon
= 13 - 5
= 8
Length of the ribbon between the fifth and the thirteenth balloon
= 8 x 17
= 136 cm
(b)
Sets of 17 cm
= 180 ÷ 17
= 10 r 10
Most number of balloons
= 10 + 1
= 11
Answer(s): (a) 136 cm; (b) 11