PSLE
Ivory and Xylia folded paper stars over two days. On Thursday, Ivory folded 22 paper stars more than Xylia. On Friday, Ivory folded another 34 paper stars and Xylia folded another 11. At the end of the two days, Ivory made ⁵₇ of the total number of stars. What was the number of paper stars that Xylia folded?

	Ivory	Xylia	Difference
Before	1 u + 22	1 u	22
Change	+ 34	+ 11
After	1 u + 56	1 u + 11	45
Comparing between Ivory and Xylia in the end	5 p	2 p	3 p

Difference between the number of paper stars that Ivory and Xylia folded in the end is repeated.

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

Difference between the number of paper stars that Ivory and Xylia folded in the end
= (1 u + 56) - (1 u + 11)
= 1 u + 56 - 1 u - 11
= 56 - 11
= 45

3 p = 45

1 p = 45 ÷ 3 = 15

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

Answer(s): 30