PSLE
Roshel and Rachel folded paper balls over two days. On Saturday, Roshel folded 14 paper balls more than Rachel. On Sunday, Roshel folded another 31 paper balls and Rachel folded another 17. At the end of the two days, Roshel made ⁵₈ of the total number of balls. What was the number of paper balls that Roshel folded?

	Roshel	Rachel	Difference
Before	1 u + 14	1 u	14
Change	+ 31	+ 17
After	1 u + 45	1 u + 17	28
Comparing between Roshel and Rachel in the end	5 p	3 p	2 p

Difference between the number of paper balls that Roshel and Rachel folded in the end is repeated.

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

Difference between the number of paper balls that Roshel and Rachel folded in the end
= (1 u + 45) - (1 u + 17)
= 1 u + 45 - 1 u - 17
= 45 - 17
= 28

2 p = 28

1 p = 28 ÷ 2 = 14

Number of paper balls that Roshel folded
= 5 p
= 5 x 14
= 70

Answer(s): 70