PSLE
Wendy and Irene folded paper stars over two days. On Wednesday, Wendy folded 22 paper stars more than Irene. On Thursday, Wendy folded another 16 paper stars and Irene folded another 2. At the end of the two days, Wendy made ⁵₇ of the total number of stars. What was the number of paper stars that Wendy folded?

	Wendy	Irene	Difference
Before	1 u + 22	1 u	22
Change	+ 16	+ 2
After	1 u + 38	1 u + 2	36
Comparing between Wendy and Irene in the end	5 p	2 p	3 p

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

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

Difference between the number of paper stars that Wendy and Irene folded in the end
= (1 u + 38) - (1 u + 2)
= 1 u + 38 - 1 u - 2
= 38 - 2
= 36

3 p = 36

1 p = 36 ÷ 3 = 12

Number of paper stars that Wendy folded
= 5 p
= 5 x 12
= 60

Answer(s): 60