Higher January 2022 Paper 1R Q7
7 Milly went on a car journey.
She travelled from Anesey to Breigh to Clando and then to Duckbridge.
For Anesey to Breigh, Milly drove the 245 km in 2.5 hours.
For Breigh to Clando, Milly drove the 220 km at an average speed of 80 km/h
For Clando to Duckbridge, Milly drove at an average speed of 72 km/h in 50 minutes.
Work out Milly’s average speed, in km/h, for the journey from Anesey to Duckbridge.
Give your answer correct to one decimal place.
(4)
| Scheme | Marks |
|---|---|
| 220 ÷ 80 (= 2.75 or \(\dfrac{11}{4}\)) oe | M1 |
| \(72 \times \dfrac{50}{60}\) (= 60) oe | M1 |
| \(\dfrac{245 + 220 + \text{``}{60}\text{''}}{2.5 + \text{``}{2.75}\text{''} + \dfrac{50}{60}}\left(= \dfrac{525}{73/12}\right)\) oe | M1 |
| 86.3 | A1 |
| (4) | |
| (4 marks) |
Notes
M1: for a method to find the time from B to C
M1: for a method to find the distance from C to D
Allow 0.83(333…) to 2 dp truncated or rounded
M1: for a complete method to find the average speed for entire journey
0.83(333…) to 2 dp truncated or rounded
6.0(8333…) to 2 sf truncated or rounded
A1: for 86.3 – 86.4