Question 18
The following bar chart shows the number of students from Happy Primary School who received 4 different awards in SASMO competition. All the horizontal lines are equally spaced. The difference between the number of students who received Silver Award and Perfect Score was 140. Students who didn't win any award received Certificate of Participation and they weren't indicated on the graph. The ratio between the number of students who received Gold Award to the number of students who received Certificate of Participation was 4:9. Find the number of students who received Certificate of Participation.
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).
Answer format: enter the whole-number answer without units. Leading zeros are optional (the original paper uses four-digit answer boxes).