Numeracy Foundation June 2024 Unit 1 Q3
3. Dafydd always makes Sunday lunch for his family.
This Sunday he is going to cook a turkey.
The instructions for the total time for cooking a turkey are:
| Total time | = | 30 minutes at 220°C | + | 50 minutes per kilogram at 170°C | + | Leave for 15 minutes before serving |
Dafydd is cooking a 3 kilogram turkey.
He wants to serve it at 2 p.m.
What is the latest time that Dafydd should start the cooking?
You must show all your working. [4]
| Scheme | Marks | Comments |
|---|---|---|
| 30 + 3 × 50 + 15 | M2 | May be seen in stages Award M1 for any one of the following
|
| 3 hours and 15 minutes or 195 (minutes) | A1 | CAO. Mark final answer. |
| 10:45 (am) | B1 | FT 2pm – ‘their 3hr 15 mins’ including 15 and/or 30 correctly evaluated |
Alternative
3. Alternative method
| Scheme | Marks | Comments |
|---|---|---|
| 2pm – 15 mins correctly evaluated | B1 | These marks can be completed in any order and are FT marks |
| – 3 × 50 mins (2 hours 30 mins) correctly subtracted | B2 | Award B1 for 3 × 50 or 150 |
| – 30 mins correctly evaluated | B1 | Answer of 10:45 (am) gains B4 |
Tables below give times depending on the order that they have been subtracted from 2pm:
| Mark | Method 1 | Time |
|---|---|---|
| B1 | -15 mins | 1:45 (pm) |
| B2 | -2hrs 30 mins | 11:15 (am) |
| B1 | -30 mins | 10:45 (am) |
| Mark | Method 2 | Time |
|---|---|---|
| B1 | -15 mins | 1:45 (pm) |
| B1 | -30 mins | 1:15 (pm) |
| B2 | -2hrs 30 mins | 10:45 (am) |
| Mark | Method 3 | Time |
|---|---|---|
| B1 | -30 mins | 1:30 (pm) |
| B1 | -15 mins | 1:15 (pm) |
| B2 | -2hrs 30 mins | 10:45 (am) |
| Mark | Method 4 | Time |
|---|---|---|
| B1 | -30 mins | 1:30 (pm) |
| B2 | -2hrs 30 mins | 11:00 (am) |
| B1 | -15 mins | 10:45 (am) |
| Mark | Method 5 | Time |
|---|---|---|
| B2 | -2hrs 30 mins | 11:30 (am) |
| B1 | -15 mins | 11:15 (am) |
| B1 | -30 mins | 10:45 (am) |
| Mark | Method 6 | Time |
|---|---|---|
| B2 | -2hrs 30 mins | 11:30 (am) |
| B1 | -30 mins | 11:00 (am) |
| B1 | -15 mins | 10:45 (am) |
The alternative method is printed in italics in the original.