dstgra_0066 [11 marks]

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Details

Part	Answer	Mark	Guidance
(a)(i)	1	1
(a)(ii)	15	1
(a)(iii)	10	1
(b)(i)	3	1
(b)(ii)	24	2	M1 for 4 ÷ 10 × 60 or 4 ÷ (1/6)
(b)(iii)	6.67 (6⅔)	3	M1 for total distance 5 km and total time 45 min; M1 for 5 ÷ 45 × 60
(c)	Horizontal line at 5 km from 45 to 105 min, then a straight line from (105, 5) to (115, 0)	2	B1 for each line

Topical paper: Algebra, Distance-speed-time graphs (Extended, calculator), question 8
Sample Paper 3 (Core, calculator), question 7