Sarin’s family attend concert at the Esplanade Part 35 (Math Question)

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The blog postings are about the Singapore Math. The readers can learn from the postings on 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 how to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level. This posting is an upper primary school math question on Ratio and  Fraction.

The story on Sarin’s family attend concert at the Esplanade you can read postings on Sarin’s family attend concert at the Esplanade in Welcome category and Sarin’s family attend concert at the Esplanade Part 2 (Math Question).

Click and read the posting on Sarin learns the concept of Fraction (mathematics concept) to understand Portion or Fraction.

You should read also the posting on Sarin learns concept of ratio in school to understand mathematics concept of Ratio.

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

Upper primary school mathematics question UPQ554

In the Esplanade Library, there is an equal number of visitors on Monday and Tuesday. The ratio of the number of adult visitors to the number of children visitors on Monday is 2 : 1. The ratio of number of adult visitors to the number of children visitors in Tuseday is 4 : 11. What fraction of the visitors in the 2 days are adults?

Solution:

Ratio on Monday,

Adults visitors : Children visitors : Total on Monday = 2 : 1 : 3

Ratio on Tuseday,

Adults visitors : Children visitors : Total on Monday = 4 : 11 : 15

Since the total number of visitors are the same,

Ratio on Monday,

Adults visitors : Children visitors : Total on Monday = 2 : 1 : 3 = 10 : 5 : 15

The ratio of the visitors are adults in the two days,

Adults Monday : Adults Tuesday : Total Adults = 10 : 4 : 14

Fraction of visitors in the two days are adults = 14/30 = 7/15

Alternative solution(1):

Using fraction,

UPQ554-1

Fraction of visitors in the two days are adults = 14/30 = 7/15

Alternative solution(2):

Using model:

UPQ554-2

Since both days have same number of visitors, same number of units

The fraction of adults visitors in the two days = 14/30 = 7/15

More Questions on Ratio and Fraction. Click here….

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