PSLE
Vanessa and Tammy folded paper cranes over two days. On Tuesday, Vanessa folded 33 paper cranes more than Tammy. On Wednesday, Vanessa folded another 16 paper cranes and Tammy folded another 13. At the end of the two days, Vanessa made ⁷₁₀ of the total number of cranes. What was the number of paper cranes that Vanessa folded?

	Vanessa	Tammy	Difference
Before	1 u + 33	1 u	33
Change	+ 16	+ 13
After	1 u + 49	1 u + 13	36
Comparing between Vanessa and Tammy in the end	7 p	3 p	4 p

Difference between the number of paper cranes that Vanessa and Tammy folded in the end is repeated.

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

Difference between the number of paper cranes that Vanessa and Tammy folded in the end
= (1 u + 49) - (1 u + 13)
= 1 u + 49 - 1 u - 13
= 49 - 13
= 36

4 p = 36

1 p = 36 ÷ 4 = 9

Number of paper cranes that Vanessa folded
= 7 p
= 7 x 9
= 63

Answer(s): 63