# Sarin participates in school anniversary event part 23 (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 Guess and Check method and  Problem Solving.

Read the posting on Sarin participates in school anniversary event part 1 for story on school anniversary.

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

Upper primary school mathematics question UPQ463

The teacher-in-charge had given Sarin team 250 erasers to use in the school anniversary event. They were 22 members in Sarin Team. The teacher gave each boy a number of erasera equal to the number of boys in the team and each girl a number of erasers equal to the number of girls in the team. There were more boys than girls in the team.

(a)        How many girls were there in the team?

(b)        How many erasers did the boys receive altogether?

Solution:

If number of boys is B

The total number of cookies given to the boys is B × B

If number of girls is G

The total number of cookies given to the girls is G × G

The total number of cookies baked is 250

The total number of pupils is 22

Since the number of boys are more than girls

Start the guess and check method with 12 boys and 10 girls

The number of girls in the class is 9.

The number of cookies that the boys received = 13 × 13 = 169

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