PSLE
Julie and Jaslyn folded paper cranes over two days. On Tuesday, Julie folded 18 paper cranes more than Jaslyn. On Wednesday, Julie folded another 36 paper cranes and Jaslyn folded another 4. At the end of the two days, Julie made ⁷₉ of the total number of cranes. What was the number of paper cranes that Julie folded?

	Julie	Jaslyn	Difference
Before	1 u + 18	1 u	18
Change	+ 36	+ 4
After	1 u + 54	1 u + 4	50
Comparing between Julie and Jaslyn in the end	7 p	2 p	5 p

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

Difference between the number of paper cranes that Julie and Jaslyn folded in the end
= 7 p - 2 p
= 5 p

Difference between the number of paper cranes that Julie and Jaslyn folded in the end
= (1 u + 54) - (1 u + 4)
= 1 u + 54 - 1 u - 4
= 54 - 4
= 50

5 p = 50

1 p = 50 ÷ 5 = 10

Number of paper cranes that Julie folded
= 7 p
= 7 x 10
= 70

Answer(s): 70