PSLE
Jade and Rachel folded paper cranes over two days. On Wednesday, Jade folded 17 paper cranes more than Rachel. On Thursday, Jade folded another 28 paper cranes and Rachel folded another 9. At the end of the two days, Jade made ⁵₇ of the total number of cranes. What was the number of paper cranes that Rachel folded?

	Jade	Rachel	Difference
Before	1 u + 17	1 u	17
Change	+ 28	+ 9
After	1 u + 45	1 u + 9	36
Comparing between Jade and Rachel in the end	5 p	2 p	3 p

Difference between the number of paper cranes that Jade and Rachel folded in the end is repeated.

Difference between the number of paper cranes that Jade and Rachel folded in the end
= 5 p - 2 p
= 3 p

Difference between the number of paper cranes that Jade and Rachel folded in the end
= (1 u + 45) - (1 u + 9)
= 1 u + 45 - 1 u - 9
= 45 - 9
= 36

3 p = 36

1 p = 36 ÷ 3 = 12

Number of paper cranes that Rachel folded
= 2 p
= 2 x 12
= 24

Answer(s): 24