PSLE
Jen and Lucy folded paper cranes over two days. On Monday, Jen folded 25 paper cranes more than Lucy. On Tuesday, Jen folded another 16 paper cranes and Lucy folded another 5. At the end of the two days, Jen made ⁵₇ of the total number of cranes. What was the number of paper cranes that Jen folded?

	Jen	Lucy	Difference
Before	1 u + 25	1 u	25
Change	+ 16	+ 5
After	1 u + 41	1 u + 5	36
Comparing between Jen and Lucy in the end	5 p	2 p	3 p

Difference between the number of paper cranes that Jen and Lucy folded in the end is repeated.

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

Difference between the number of paper cranes that Jen and Lucy folded in the end
= (1 u + 41) - (1 u + 5)
= 1 u + 41 - 1 u - 5
= 41 - 5
= 36

3 p = 36

1 p = 36 ÷ 3 = 12

Number of paper cranes that Jen folded
= 5 p
= 5 x 12
= 60

Answer(s): 60