PSLE
Esther and Nicole folded paper balls over two days. On Thursday, Esther folded 4 paper balls more than Nicole. On Friday, Esther folded another 20 paper balls and Nicole folded another 6. At the end of the two days, Esther made ⁵₈ of the total number of balls. What was the number of paper balls that Esther folded?

	Esther	Nicole	Difference
Before	1 u + 4	1 u	4
Change	+ 20	+ 6
After	1 u + 24	1 u + 6	18
Comparing between Esther and Nicole in the end	5 p	3 p	2 p

Difference between the number of paper balls that Esther and Nicole folded in the end is repeated.

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

Difference between the number of paper balls that Esther and Nicole folded in the end
= (1 u + 24) - (1 u + 6)
= 1 u + 24 - 1 u - 6
= 24 - 6
= 18

2 p = 18

1 p = 18 ÷ 2 = 9

Number of paper balls that Esther folded
= 5 p
= 5 x 9
= 45

Answer(s): 45