1MA0 Higher June 2013 Paper 1 Q2
2 Mr Mason asks 240 Year 11 students what they want to do next year.
15% of the students want to go to college.
\(\dfrac{3}{4}\) of the students want to stay at school.
The rest of the students do not know.
Work out the number of students who do not know. (4)
| Answer | Mark | Notes |
|---|---|---|
| 24 | 4 | M1 for \(0.15 \times 240\) ( = 36) oe M1 for \(\frac{3}{4} \times 240\) ( = 180) oe M1 (dep on both prev M1) for 240 – “180” – “36” A1 cao OR M1 for 15(%) + 75(%) ( = 90(%)) M1 for 100(%) – “90(%)” ( = 10(%)) M1 (dep on both prev M1) for \(\text{``}\frac{10}{100}\text{''} \times 240\) oe A1 cao OR M1 for 0.15 + 0.75( = 0.9) oe M1 for “0.9” × 240( = 216) oe M1 (dep on both prev M1) for 240 − “216” A1 cao OR M1 for 0.15 + 0.75( = 0.9) oe M1 for 1 – “0.9”( = 0.1) oe M1 (dep on both prev M1) for “0.1” × 240 oe A1 cao |