PSLE
Tiffany and Pamela folded paper balls over two days. On Saturday, Tiffany folded 6 paper balls more than Pamela. On Sunday, Tiffany folded another 33 paper balls and Pamela folded another 3. At the end of the two days, Tiffany made ⁵₇ of the total number of balls. What was the number of paper balls that Pamela folded?

	Tiffany	Pamela	Difference
Before	1 u + 6	1 u	6
Change	+ 33	+ 3
After	1 u + 39	1 u + 3	36
Comparing between Tiffany and Pamela in the end	5 p	2 p	3 p

Difference between the number of paper balls that Tiffany and Pamela folded in the end is repeated.

Difference between the number of paper balls that Tiffany and Pamela folded in the end
= 5 p - 2 p
= 3 p

Difference between the number of paper balls that Tiffany and Pamela folded in the end
= (1 u + 39) - (1 u + 3)
= 1 u + 39 - 1 u - 3
= 39 - 3
= 36

3 p = 36

1 p = 36 ÷ 3 = 12

Number of paper balls that Pamela folded
= 2 p
= 2 x 12
= 24

Answer(s): 24