PSLETommy had 2.3 m of ribbon. He used some of it to make the figure as shown.
- How much of the ribbon did Andy use to make the figure? Leave your answer in the simplest form in terms of q.
- If q = 14, how much of the ribbon was not used to make the figure? Leave your answer in meters.
(a)
Total length of ribbon used
= q + q + q + (2q - 7) + (q + 12)
= q + q + q + 2q + q - 7 + 12
= (6 q + 5) cm
(b)
1 m = 100 cm
2.3 m = 230 cm
Total length of ribbon used if q = 14
= 6 q + 5
= 6(14) + 5
= 84 + 5
= 89 cm
Total length of ribbon not used
= 230 - 89
= 141 cm
1 cm = 0.01 m
141 cm = 1.41 m
Answer(s): (a) (6q + 5) cm; (b) 1.41 m