4MA0 Foundation January 2012 Paper 2 Q10
10 A machine makes paper clips from a 2 metre length of wire.
Each paper clip is made from 72 mm of wire.
(i) Work out the number of paper clips the machine makes.
(ii) Work out the length of wire which is left over.
Give your answer in millimetres.
Give your answer in millimetres.
(5)
| Scheme | Marks |
|---|---|
| (i) 2000 ÷ 72 or 200 ÷ 7.2 or 2 ÷ 0.072 or 27.77… | M2 |
| 27 | A1 |
| (ii) “2000” − “27” × “72” or 2000 − 1944 or 0.777… × 72 | M1 |
| 56 | A1 |
| (5) | |
| (Total 5 marks) |
Notes
M2: M1 for 2 ÷ 72 or 0.0277… or for division with incorrect conversion(s)
eg 200 ÷ 72 or 2.77…
20 ÷ 72 or 0.277…
2 ÷ 0.72 or 2.77...
A1: cao
M1: Their “27” must be a whole number.
A1: cao