PSLE
Fiona and Julie folded paper stars over two days. On Tuesday, Fiona folded 10 paper stars more than Julie. On Wednesday, Fiona folded another 39 paper stars and Julie folded another 5. At the end of the two days, Fiona made ⁷₁₀ of the total number of stars. What was the number of paper stars that Fiona folded?

	Fiona	Julie	Difference
Before	1 u + 10	1 u	10
Change	+ 39	+ 5
After	1 u + 49	1 u + 5	44
Comparing between Fiona and Julie in the end	7 p	3 p	4 p

Difference between the number of paper stars that Fiona and Julie folded in the end is repeated.

Difference between the number of paper stars that Fiona and Julie folded in the end
= 7 p - 3 p
= 4 p

Difference between the number of paper stars that Fiona and Julie folded in the end
= (1 u + 49) - (1 u + 5)
= 1 u + 49 - 1 u - 5
= 49 - 5
= 44

4 p = 44

1 p = 44 ÷ 4 = 11

Number of paper stars that Fiona folded
= 7 p
= 7 x 11
= 77

Answer(s): 77