PSLEDaniel had 3.1 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 + (3q - 6) + (q + 15)
= q + q + q + 3q + q - 6 + 15
= (7 q + 9) cm
(b)
1 m = 100 cm
3.1 m = 310 cm
Total length of ribbon used if q = 14
= 7 q + 9
= 7(14) + 9
= 98 + 9
= 107 cm
Total length of ribbon not used
= 310 - 107
= 203 cm
1 cm = 0.01 m
203 cm = 2.03 m
Answer(s): (a) (7q + 9) cm; (b) 2.03 m