Jess wants 200 ribbons of length 110 cm for a party. However, the ribbons were sold at 25 m per tape. How many tapes will Jess need?
Jess will need 10 tapes.
There are two units of measurement in the question – metres and centimetres. Each tape is 2500 cm long.
First, we need to derive the number of ribbons that Jess can cut from each tape.
2500 / 110 = 22.72
We round this number down to the nearest whole number, which is 22, since the excess tape (80 cm) cannot be used to create more ribbons.
Therefore, Jess can get 22 ribbons from each tape.
Second, we need to determine the total number of tapes required to make 200 ribbons.
200 / 22 = 9.09
We round this answer up to the nearest whole number, which is 10, since Jess needs more than 9 tapes to complete the task.
9 tapes will only give a total of (9 x 22) 198 ribbons.