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primary 5 | Maths
| Whole Numbers
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Pls solve and explain
2500 cm / 110 cm = 22 R80
this means from 1 roll of 25 m,
Jess can cut 22 pieces of 110 cm,
and there is 80 cm leftover that cannot be used.
200 / 22 = 9 1/11
to get 200 pieces, Jess needs 9 1/11 rolls,
but since you cannot buy 1/11 of a roll,
Jess needs to buy at least 10 rolls.
note that for this type of question, cannot take total length of ribbon required, divide by length in 1 roll, because there is some remainder in each roll that cannot be used.