PSLE
Jane and Winnie folded paper stars over two days. On Thursday, Jane folded 20 paper stars more than Winnie. On Friday, Jane folded another 28 paper stars and Winnie folded another 9. At the end of the two days, Jane made ⁵₇ of the total number of stars. What was the number of paper stars that Jane folded?

	Jane	Winnie	Difference
Before	1 u + 20	1 u	20
Change	+ 28	+ 9
After	1 u + 48	1 u + 9	39
Comparing between Jane and Winnie in the end	5 p	2 p	3 p

Difference between the number of paper stars that Jane and Winnie folded in the end is repeated.

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

Difference between the number of paper stars that Jane and Winnie folded in the end
= (1 u + 48) - (1 u + 9)
= 1 u + 48 - 1 u - 9
= 48 - 9
= 39

3 p = 39

1 p = 39 ÷ 3 = 13

Number of paper stars that Jane folded
= 5 p
= 5 x 13
= 65

Answer(s): 65