P6 Math: Before and After (3 changes to percentage between 2 values)

This question type show the percentage changes at every step of the "internal transfer" that happens between 2 values.

Such questions are common in Paper 2 of P6 Prelim exams.

Calculator usage is allowed.

Shane and Kirsten have a total of $8640 at first.

Shane gave Kirsten some of his money and Kirsten's amount increased by 60%.

Kirsten then gave Shane some of her money and Shane's amount increased by 30%.

Then, Shane gave Kirsten some of his money and Kirsten's amount increased by 80%.

Both had equal amount of money in the end.

Find the percentage increase of the amount of Kirsten's money.

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P5P6 Math: Percentage Decrease of One Value vs Percentage Decrease of the Total

While percentage simply means a fraction of 100, the concept of percentage becomes complex when the terms such as percentage increase or decrease is in play.

Such questions usually appear in P5 and P6 exams in Paper 2.

Calculator usage is allowed.

In June, Alan was given an allowance of $200.

Alan spent 20% of his allowance on food and 30% of the allowance on transport.

He saved the remaining of the allowance in June.

In July, he was given less allowance.

So he spent 20% lesser on food but spent the same amount on transport and saved the same amount as in June.

What was the percentage decrease of his allowance in July?

The question below will randomize with different numbers every hour. 

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P6 Math: Percentage Increase and Decrease of 2 Values with Ending Ratio given

In the question type below, 2 values undergo percentage increase and decrease with one of the decrease value given. The resulting ratio is also given at the end.

Such questions are common in Paper 2 of P6 exams.

Caculator usage is allowed.

Wendy has a collection of stickers and ribbons.

She added more stickers to her collection and sold 2112 ribbons away.

This resulted in a 20% increase in her sticker collection and 

a 44% decrease in her ribbon collection.

The ratio of stickers to ribbons was 5:4 at the end.

How many stickers did she have in her collection at first?

If the above question is easy, try to do the more challenging question below.

The question below will randomize with different numbers every hour. 

Copy below question down before making attempt.

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