PSLE
Tina and Marion folded paper cranes over two days. On Monday, Tina folded 37 paper cranes more than Marion. On Tuesday, Tina folded another 37 paper cranes and Marion folded another 26. At the end of the two days, Tina made ⁷₁₀ of the total number of cranes. What was the number of paper cranes that Tina folded?

	Tina	Marion	Difference
Before	1 u + 37	1 u	37
Change	+ 37	+ 26
After	1 u + 74	1 u + 26	48
Comparing between Tina and Marion in the end	7 p	3 p	4 p

Difference between the number of paper cranes that Tina and Marion folded in the end is repeated.

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

Difference between the number of paper cranes that Tina and Marion folded in the end
= (1 u + 74) - (1 u + 26)
= 1 u + 74 - 1 u - 26
= 74 - 26
= 48

4 p = 48

1 p = 48 ÷ 4 = 12

Number of paper cranes that Tina folded
= 7 p
= 7 x 12
= 84

Answer(s): 84