PSLE
Risa and Zara folded paper cranes over two days. On Saturday, Risa folded 46 paper cranes more than Zara. On Sunday, Risa folded another 11 paper cranes and Zara folded another 9. At the end of the two days, Risa made ⁷₁₀ of the total number of cranes. What was the number of paper cranes that Zara folded?

	Risa	Zara	Difference
Before	1 u + 46	1 u	46
Change	+ 11	+ 9
After	1 u + 57	1 u + 9	48
Comparing between Risa and Zara in the end	7 p	3 p	4 p

Difference between the number of paper cranes that Risa and Zara folded in the end is repeated.

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

Difference between the number of paper cranes that Risa and Zara folded in the end
= (1 u + 57) - (1 u + 9)
= 1 u + 57 - 1 u - 9
= 57 - 9
= 48

4 p = 48

1 p = 48 ÷ 4 = 12

Number of paper cranes that Zara folded
= 3 p
= 3 x 12
= 36

Answer(s): 36