PSLE
Pamela and Penelope folded paper stars over two days. On Monday, Pamela folded 28 paper stars more than Penelope. On Tuesday, Pamela folded another 35 paper stars and Penelope folded another 18. At the end of the two days, Pamela made ⁵₇ of the total number of stars. What was the number of paper stars that Pamela folded?

	Pamela	Penelope	Difference
Before	1 u + 28	1 u	28
Change	+ 35	+ 18
After	1 u + 63	1 u + 18	45
Comparing between Pamela and Penelope in the end	5 p	2 p	3 p

Difference between the number of paper stars that Pamela and Penelope folded in the end is repeated.

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

Difference between the number of paper stars that Pamela and Penelope folded in the end
= (1 u + 63) - (1 u + 18)
= 1 u + 63 - 1 u - 18
= 63 - 18
= 45

3 p = 45

1 p = 45 ÷ 3 = 15

Number of paper stars that Pamela folded
= 5 p
= 5 x 15
= 75

Answer(s): 75