PSLEBobby had 3.1 m of streamer. He used some of it to make the figure as shown.
- How much of the streamer did Andy use to make the figure? Leave your answer in the simplest form in terms of e.
- If e = 26, how much of the streamer was not used to make the figure? Leave your answer in meters.
(a)
Total length of streamer used
= e + e + e + (2e - 8) + (e + 15)
= e + e + e + 2e + e - 8 + 15
= (6 e + 7) cm
(b)
1 m = 100 cm
3.1 m = 310 cm
Total length of streamer used if e = 26
= 6 e + 7
= 6(26) + 7
= 156 + 7
= 163 cm
Total length of streamer not used
= 310 - 163
= 147 cm
1 cm = 0.01 m
147 cm = 1.47 m
Answer(s): (a) (6e + 7) cm; (b) 1.47 m