Higher November 2018 Paper 5 Q6
6 Sally has 30 feet of ribbon.
She cuts strips each of length \(2\frac{2}{5}\) feet from the ribbon.
Sally says
I can cut 13 of these strips from this ribbon.
Is she correct?
Show how you decide. [4]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| No and she can only get 12[.5] strips nfww or No and \(31\frac{1}{5}\) oe [> 30] oe nfww | 4 | B3 for 12.5 or \(\dfrac{25}{2}\) oe or \(31\frac{1}{5}\) oe or B2 for \(28\frac{4}{5}\) oe seen or \(1\frac{1}{5}\) oe or for \(30 \times \dfrac{5}{12}\) oe or \(\dfrac{150}{5} \div \dfrac{12}{5}\) oe or M1 for \(30 \div 2\frac{2}{5}\) oe or \(13 \times 2\frac{2}{5}\) oe | \(28\frac{4}{5}\): amount of material used for 12 strips \(1\frac{1}{5}\): amount left over from 12 strips For M1 accept attempt for repeated addition of \(2\frac{2}{5}\) oe to make 30 (at least 3 repeats) condone 1 error in the addition |