# Sarin participates in school anniversary event part 21 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Ratio.

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.

Challenge yourself with the question before look out for the given solution‼

Upper primary school mathematics question UPQ406

A box of blue markers and green markers were shared equally by Group A and Group B of pupils in Sarin’s team during the school anniversary event. Group A took three times as many blue markers as Group B. The ratio of the number of green markers Group B took to the number of the green markers Group A took was 9 : 5.

What was the ratio of the number of blue markers Group A took to the number of green markers Group A took?

Solution:

Group A and Group B shared equally all the markers

The number of units of markers in Group A and Group B is the same

The model

From the model,

The ratio of blue markers to the green markers in group A = 6 : 5

Alternative solution:

The ratio of Blue markers,

Group A Blue : Group B Blue = 3 : 1 = 6 : 2

The ratio of green markers

Group A Green : Group B Green = 5 : 9

The total number of markers in group A to group = 1 : 1

The ratio of blue markers to the green markers in group A = 6 : 5