PSLE
Victoria and Wendy folded paper stars over two days. On Thursday, Victoria folded 43 paper stars more than Wendy. On Friday, Victoria folded another 22 paper stars and Wendy folded another 20. At the end of the two days, Victoria made ⁵₇ of the total number of stars. What was the number of paper stars that Wendy folded?

	Victoria	Wendy	Difference
Before	1 u + 43	1 u	43
Change	+ 22	+ 20
After	1 u + 65	1 u + 20	45
Comparing between Victoria and Wendy in the end	5 p	2 p	3 p

Difference between the number of paper stars that Victoria and Wendy folded in the end is repeated.

Difference between the number of paper stars that Victoria and Wendy folded in the end
= 5 p - 2 p
= 3 p

Difference between the number of paper stars that Victoria and Wendy folded in the end
= (1 u + 65) - (1 u + 20)
= 1 u + 65 - 1 u - 20
= 65 - 20
= 45

3 p = 45

1 p = 45 ÷ 3 = 15

Number of paper stars that Wendy folded
= 2 p
= 2 x 15
= 30

Answer(s): 30