Zoe had a ribbon of 250 cm long. She tied some balloons on the ribbon. Part of the ribbon and balloons were shown. Each balloon was 13 cm apart from one another.
- What is the length of the ribbon between the fourth and the eighth balloon?
- Find the most number of balloons that could be tied on the 250 cm of ribbon with balloons at 13 cm apart from one another.
(a)
Number of intervals between the fourth and the eighth balloon
= 8 - 4
= 4
Length of the ribbon between the fourth and the eighth balloon
= 4 x 13
= 52 cm
(b)
Sets of 13 cm
= 250 ÷ 13
= 19 r 3
Most number of balloons
= 19 + 1
= 20
Answer(s): (a) 52 cm; (b) 20