PSLE
Julie and Joelle folded paper cranes over two days. On Thursday, Julie folded 22 paper cranes more than Joelle. On Friday, Julie folded another 25 paper cranes and Joelle folded another 19. At the end of the two days, Julie made ⁵₈ of the total number of cranes. What was the number of paper cranes that Joelle folded?

	Julie	Joelle	Difference
Before	1 u + 22	1 u	22
Change	+ 25	+ 19
After	1 u + 47	1 u + 19	28
Comparing between Julie and Joelle in the end	5 p	3 p	2 p

Difference between the number of paper cranes that Julie and Joelle folded in the end is repeated.

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

Difference between the number of paper cranes that Julie and Joelle folded in the end
= (1 u + 47) - (1 u + 19)
= 1 u + 47 - 1 u - 19
= 47 - 19
= 28

2 p = 28

1 p = 28 ÷ 2 = 14

Number of paper cranes that Joelle folded
= 3 p
= 3 x 14
= 42

Answer(s): 42