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Read the posting on Sarin participates in school anniversary event part 1 for story on school anniversary.
Read the posting on Sarin learns concept of ratio in school to understand Ratio.
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Upper primary school mathematics question UPQ528
Sarin and his team were given some red, yellow and blue stickers to use in the school anniversary event. His team were to use the stickers to identify the seat of the invited guests by pacing the stickers on the chairs used in anniversary dinner. The team used total 260 stickers and the ratio of number of red stickers to the number of yellow stickers to the number of blue stickers used was 9 : 4 : 7. How many more red than blue stickers did the team use? If the total number of stickers used was 3 times of the total number of stickers. How many stickers did Sarin and his team receive?
Per the given ratio, draw the math model for number of stickers used
Given Ratio: Red : Yellow : blue : total = 9 : 4 : 7 : 20
Based on the model
20 units = 260
1 unit = 13 stickers
The number of red stickers more than the number of blue stickers = 2 × 13 = 26
The total number of used stickers = 260
The total number of stickers was 3 times the used stickers
The number of stickers that Sarin and the team received = 3 × 260 = 780