PSLE
Risa and Hazel folded paper stars over two days. On Friday, Risa folded 26 paper stars more than Hazel. On Saturday, Risa folded another 40 paper stars and Hazel folded another 22. At the end of the two days, Risa made ⁷₁₀ of the total number of stars. What was the number of paper stars that Risa folded?

	Risa	Hazel	Difference
Before	1 u + 26	1 u	26
Change	+ 40	+ 22
After	1 u + 66	1 u + 22	44
Comparing between Risa and Hazel in the end	7 p	3 p	4 p

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

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

Difference between the number of paper stars that Risa and Hazel folded in the end
= (1 u + 66) - (1 u + 22)
= 1 u + 66 - 1 u - 22
= 66 - 22
= 44

4 p = 44

1 p = 44 ÷ 4 = 11

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

Answer(s): 77