PSLE
Nicole and Abi folded paper balls over two days. On Saturday, Nicole folded 39 paper balls more than Abi. On Sunday, Nicole folded another 21 paper balls and Abi folded another 30. At the end of the two days, Nicole made ⁵₈ of the total number of balls. What was the number of paper balls that Abi folded?

	Nicole	Abi	Difference
Before	1 u + 39	1 u	39
Change	+ 21	+ 30
After	1 u + 60	1 u + 30	30
Comparing between Nicole and Abi in the end	5 p	3 p	2 p

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

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

Difference between the number of paper balls that Nicole and Abi folded in the end
= (1 u + 60) - (1 u + 30)
= 1 u + 60 - 1 u - 30
= 60 - 30
= 30

2 p = 30

1 p = 30 ÷ 2 = 15

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

Answer(s): 45