PSLE
Gabby and Joelle folded paper stars over two days. On Thursday, Gabby folded 43 paper stars more than Joelle. On Friday, Gabby folded another 34 paper stars and Joelle folded another 2. At the end of the two days, Gabby made ⁷₉ of the total number of stars. What was the number of paper stars that Gabby folded?

	Gabby	Joelle	Difference
Before	1 u + 43	1 u	43
Change	+ 34	+ 2
After	1 u + 77	1 u + 2	75
Comparing between Gabby and Joelle in the end	7 p	2 p	5 p

Difference between the number of paper stars that Gabby and Joelle folded in the end is repeated.

Difference between the number of paper stars that Gabby and Joelle folded in the end
= 7 p - 2 p
= 5 p

Difference between the number of paper stars that Gabby and Joelle folded in the end
= (1 u + 77) - (1 u + 2)
= 1 u + 77 - 1 u - 2
= 77 - 2
= 75

5 p = 75

1 p = 75 ÷ 5 = 15

Number of paper stars that Gabby folded
= 7 p
= 7 x 15
= 105

Answer(s): 105