PSLE
Abi and Victoria folded paper balls over two days. On Wednesday, Abi folded 50 paper balls more than Victoria. On Thursday, Abi folded another 33 paper balls and Victoria folded another 27. At the end of the two days, Abi made ⁷₁₀ of the total number of balls. What was the number of paper balls that Victoria folded?

	Abi	Victoria	Difference
Before	1 u + 50	1 u	50
Change	+ 33	+ 27
After	1 u + 83	1 u + 27	56
Comparing between Abi and Victoria in the end	7 p	3 p	4 p

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

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

Difference between the number of paper balls that Abi and Victoria folded in the end
= (1 u + 83) - (1 u + 27)
= 1 u + 83 - 1 u - 27
= 83 - 27
= 56

4 p = 56

1 p = 56 ÷ 4 = 14

Number of paper balls that Victoria folded
= 3 p
= 3 x 14
= 42

Answer(s): 42