A piece of ribbon is 5 metres long.
Gina and Liam each use part of the ribbon to wrap a present.
- Gina uses 1.6 meters
- Liam uses 256 cm
The remaining ribbon is cut into 7 pieces of equal length.
How long is each piece of ribbon?
First of all, we need to convert Liam’s length of ribbon from cm into metres. There are 100cm in a metre, so if we divide 256 cm by 100 that will tell us how many metres it is:
256 ÷ 100 = 2.56m
Next, we need to add the lengths of ribbon used by Gina and Liam together and then subtract the total from the overall 5m of ribbon:
1.6m + 2.56m = 4.16m 5m – 4.16m = 0.84m
The 0.84m of ribbon that was left was then divided into 7 equal pieces, so:
0.84m ÷ 7 = 0.12m
So, each piece of ribbon is 0.12m long, or if we multiply that by 100 to convert it into cm, each piece is 12cm long.