O-LevelComputer ScienceAlgorithm design and problem-solving2210/22 · May/June 2016 · Q34 Marks
The flowchart below calculates the number of tins of paint required to paint walls. The flowchart inputs the height and width of a wall in metres, the number of doors and the number of windows. A value of -1 for the height stops the input. [Flowchart]
- Complete the trace table for the input data: 3, 5, 1, 0, 3, 7, 0, 0, 3, 5, 0, 3, 3, 7, 1, 1, -1, 0, 0, 0 Area Tins Height Width Doors Windows[4]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme (May/June 2016). The mark or mark type is shown in brackets.
- [2] Area column: 1 mark 0, 13.5; 1 mark for rest (34.5, 46.5, 65)
- [1] Tins column: 7
- [1] Height, Width, Doors, Windows columns: (1 mark) for correct inputs copied.
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →