# Sarin’s family and The Great Singapore Sale Part 3 (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 acquire 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 Percentage.

Read the posting on Sarin’s family and The Great Singapore Sale in the Welcome category for the story.

You can read the posting on Sarin learns Average Number, Percentage and Charting in school (Math Concept) to understand about Percentage.

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

Upper primary school mathematics question UPQ442

The snack bars with their selling prices on sale during the Great Singapore Sale are as below. How much can Hairu save if he buys a packet of Mars bar and a packet of Sinkers bar each?

Solution:

The percentage of saving for a packet of Mars snack bar is 18%

The percentage equal to \$5.25 = 100 – 18 = 82%

The usual price of a packet of Mars snack bar = 5.25 ÷ 82% ≈ \$6.40

The saving from a packet of Mars snack bar = 6.40 – 5.25 = \$1.15

Similarly,

The percentage of saving for a packet of Snicker snack bar is 15%

The percentage equal to \$3.75 = 100 – 15% = 85%

The usual price of a packet of Snicker snack bar = 3.75 ÷ 85% ≈ \$4.41

The saving from a packet of Snicker snack bar = 4.41 – 3.75 = \$ 0.66

The amount that Hairu saved = 1.15 + 0.66 = \$1.81