PSLE
Nicole and Sabrina folded paper balls over two days. On Thursday, Nicole folded 23 paper balls more than Sabrina. On Friday, Nicole folded another 14 paper balls and Sabrina folded another 5. At the end of the two days, Nicole made ⁷₁₀ of the total number of balls. What was the number of paper balls that Sabrina folded?

	Nicole	Sabrina	Difference
Before	1 u + 23	1 u	23
Change	+ 14	+ 5
After	1 u + 37	1 u + 5	32
Comparing between Nicole and Sabrina in the end	7 p	3 p	4 p

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

Difference between the number of paper balls that Nicole and Sabrina folded in the end
= 7 p - 3 p
= 4 p

Difference between the number of paper balls that Nicole and Sabrina folded in the end
= (1 u + 37) - (1 u + 5)
= 1 u + 37 - 1 u - 5
= 37 - 5
= 32

4 p = 32

1 p = 32 ÷ 4 = 8

Number of paper balls that Sabrina folded
= 3 p
= 3 x 8
= 24

Answer(s): 24