1MA0 Foundation June 2013 Paper 1 Q27
27 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 × 240 oe ( = 36) M1 for \(\dfrac{3}{4} \times 240\) oe ( = 180) 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 “\(\dfrac{10}{100}\)” × 240 oe A1 cao OR M1 for 0.15 + 0.75 oe ( = 0.9) M1 for “0.9” × 240 oe (= 216) M1 (dep on both prev M1) for 240 – “216” A1 cao OR M1 for 0.15 + 0.75 oe ( = 0.9) M1 for 1 – “0.9” oe (= 0.1) M1 (dep on both prev M1) for “0.1” × 240 = 24 A1 cao |