PSLE
Hazel and Yoko folded paper stars over two days. On Friday, Hazel folded 48 paper stars more than Yoko. On Saturday, Hazel folded another 10 paper stars and Yoko folded another 13. At the end of the two days, Hazel made ⁵₇ of the total number of stars. What was the number of paper stars that Yoko folded?

	Hazel	Yoko	Difference
Before	1 u + 48	1 u	48
Change	+ 10	+ 13
After	1 u + 58	1 u + 13	45
Comparing between Hazel and Yoko in the end	5 p	2 p	3 p

Difference between the number of paper stars that Hazel and Yoko folded in the end is repeated.

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

Difference between the number of paper stars that Hazel and Yoko folded in the end
= (1 u + 58) - (1 u + 13)
= 1 u + 58 - 1 u - 13
= 58 - 13
= 45

3 p = 45

1 p = 45 ÷ 3 = 15

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

Answer(s): 30