Intermediate November 2021 Unit 2 Q5
5.
(a) A camera was switched on at
21:45 on 20th March, 2021.
It was left continuously filming until the battery ran out.
The battery lasted for exactly 2 days and 10 hours.
At what time and on which date did the battery run out? [2]
Battery ran out at …………… : …………… on …………… March 2021.
(b) Helen says,
15 miles is nearly 25 kilometres.
Is she correct?
You must show all your working. [2]
| Scheme | Marks | Comments |
|---|---|---|
| (0)7:45 23 (March) | B2 | B1 for each. B0 for (0)7:45 p.m. |
| Scheme | Marks | Comments |
|---|---|---|
| Sight of 5 miles ≡ 8 km or equivalent. | B1 | Allow a more accurate conversion (5 miles ≡ 8 to 8·05 km). Do not accept 3 miles ≡ 5 km |
| Shows 15 miles to be 24 km AND a valid statement e.g. ‘yes (it’s nearly 25 km’), ‘no (it’s only 24 km’). | B1 | ’15 miles is 24 km’ with no statement is B1B0. Accept a one word decision of ‘Yes’ or ‘No’ as a statement. |
Alternative method
| Scheme | Marks | Comments |
|---|---|---|
| Sight of 8 km ≡ 5 miles or equivalent. | B1 | Allow a more accurate conversion (8 km ≡ 4·97 to 5 miles). Do not accept 5 km ≡ 3 miles |
| Shows 25 km to be 15·625 miles AND a valid statement e.g. ‘yes (it’s just over 15 miles’), ‘no (it’s over 15 miles)’. | B1 | ’25 km is 15·625 miles’ with no statement is B1B0. Accept a one word decision of ‘Yes’ or ‘No’ as a statement. |