Intermediate November 2021 Unit 1 Q9
9.
(a) Express 54 miles as a percentage of 300 miles. [2]
(b) A car travels 100 miles in 2 hours and 30 minutes.
Calculate its average speed in miles per hour. [3]
Calculate its average speed in miles per hour. [3]
| Scheme | Marks | Comments |
|---|---|---|
| \(\dfrac{54}{300}\) x 100 or equivalent | M1 | Allow sight of 18/100 or 0·18 for M1. M0 for 54/300 alone. |
| = 18(%) | A1 |
| Scheme | Marks | Comments |
|---|---|---|
| Use of Distance / Time | M1 | Allow M1 even for e.g. 100 / 2·3(0) or 100/150. |
| \(\dfrac{100}{2{\cdot}5}\) or equivalent | M1 | |
| = 40 (mph) | A1 | C.A.O. |