Higher June 2019 Unit 2 Q13
13. A car travels 300 km, measured correct to the nearest 5 km.
It travels this distance in 6 hours, measured correct to the nearest hour.
Calculate the least possible average speed of the car.
Give your answer in km/h, correct to 2 decimal places. [3]
| Scheme | Marks | Comments |
|---|---|---|
| Sight of 297.5 AND 6.5 | B1 | Accept 6 hours 30 minutes, but not 6.3 hours. |
| 297.5 ÷ 6.5 | M1 | If other calculations shown, then the relevant calculation must be identified. Award M1 for their values provided 295≤d<300 AND 6<t≤7 (but not 6 hours 30 minutes). |
| = 45.77(km/h) | A1 | CAO. Correct answer must be clearly identified. |