PSLE
Eva and Irene folded paper balls over two days. On Saturday, Eva folded 32 paper balls more than Irene. On Sunday, Eva folded another 26 paper balls and Irene folded another 28. At the end of the two days, Eva made ⁵₈ of the total number of balls. What was the number of paper balls that Irene folded?

	Eva	Irene	Difference
Before	1 u + 32	1 u	32
Change	+ 26	+ 28
After	1 u + 58	1 u + 28	30
Comparing between Eva and Irene in the end	5 p	3 p	2 p

Difference between the number of paper balls that Eva and Irene folded in the end is repeated.

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

Difference between the number of paper balls that Eva and Irene folded in the end
= (1 u + 58) - (1 u + 28)
= 1 u + 58 - 1 u - 28
= 58 - 28
= 30

2 p = 30

1 p = 30 ÷ 2 = 15

Number of paper balls that Irene folded
= 3 p
= 3 x 15
= 45

Answer(s): 45