1MA0 Foundation March 2013 Paper 1 Q8
8
(a) Write 8 45 pm as a 24-hour clock time. (1)
Seeta did a puzzle in 3 minutes 45 seconds.
Ninal did the same puzzle in 7 minutes 28 seconds.
Seeta says,
‘I did the puzzle in less than half the time Ninal did the puzzle.’
*(b) Is Seeta right?
You must show all your working. (3)
You must show all your working. (3)
| Answer | Mark | Notes |
|---|---|---|
| 20 45 | 1 | B1 |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| Example of figures for comparison 7min 30 sec with 7 min 28 secs 3 mins 43 secs with 3mins 45 secs 224 secs with 225 secs 3mins 44 secs with 3 mins 45 secs | No | 3 | M1 for doubling Seeta’s time or halving Ninal’s time or finding the difference between the two times Eg 3 min 45 sec \(\times 2\) or (7m 28s) \(\div 2\) or 7m 28s−3min 45 secs M1 for a complete method to convert their time(s) to common units with the units stated C1 for No and correct figures compared (could be in secs or mins and secs) |