1MA0 Higher November 2012 Paper 2 Q5
5
\(A\), \(B\) and \(C\) are 3 service stations on a motorway.
\(AB = 25\) miles
\(BC = 25\) miles
Aysha drives along the motorway from \(A\) to \(C\).
Aysha drives at an average speed of 50 mph from \(A\) to \(B\).
She drives at an average speed of 60 mph from \(B\) to \(C\).
Work out the difference in the time Aysha takes to drive from \(A\) to \(B\) and the time Aysha takes to drive from \(B\) to \(C\).
Give your answer in minutes. (3)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| 25 ÷ 50 = 0.5 h = 30 min 25 ÷ 60 = 0.416 h = 25 min | 5 | 3 | M1 for 25 ÷ 50 or \(\frac{60}{50} \times 25\) or 30 (min) or 0.5(h) or 25 ÷ 60 or \(\frac{60}{60} \times 25\) or 25 (min) or 0.41(6)(h) or 0.42 (h) M1 (dep) ‘0.5’ – ‘0.416’ or ‘30’ – ‘25’ A1 cao OR M1 for 60 ÷ 25 (= 2.4) and 60 ÷ “2.4” or 50 ÷ 25 (= 2) and 60 ÷ “2” M1 (dep) ‘30’ – ‘25’ A1 cao |