Foundation June 2017 Paper 1 Q18
18
(a) Write 490 as the product of its prime factors. [2]
(b) Buses to Ayton leave the station every 25 minutes.
Buses to Bleeford leave the station every 40 minutes.
Buses to Bleeford leave the station every 40 minutes.
Buses to both places leave at 9am.
What is the next time buses to Ayton and Bleeford leave the station together? [4]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(2 \times 5 \times 7^2\) oe | 2 | B1 for only 2, 5 and 7 identified or M1 for any correct factor pair of 490 | Condone inclusion of 1 for B1 Not 1 and 490 |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 12 20 [pm] | 4 | SC3 for 1220 am OR B2 for LCM as 200 and M1 for 9:00 plus their LCM OR M1 for \(25 = 5 \times 5\) and \(40 = 2 \times 2 \times 2 \times 5\) and M1 for 9:00 plus their LCM OR B1 for listing [0]925, [0]950, 1015 and B1 for listing [0]940, 1020, 1100 | |