PSLE
Julie and Kimberly folded paper stars over two days. On Monday, Julie folded 61 paper stars more than Kimberly. On Tuesday, Julie folded another 18 paper stars and Kimberly folded another 19. At the end of the two days, Julie made ⁷₁₀ of the total number of stars. What was the number of paper stars that Kimberly folded?

	Julie	Kimberly	Difference
Before	1 u + 61	1 u	61
Change	+ 18	+ 19
After	1 u + 79	1 u + 19	60
Comparing between Julie and Kimberly in the end	7 p	3 p	4 p

Difference between the number of paper stars that Julie and Kimberly folded in the end is repeated.

Difference between the number of paper stars that Julie and Kimberly folded in the end
= 7 p - 3 p
= 4 p

Difference between the number of paper stars that Julie and Kimberly folded in the end
= (1 u + 79) - (1 u + 19)
= 1 u + 79 - 1 u - 19
= 79 - 19
= 60

4 p = 60

1 p = 60 ÷ 4 = 15

Number of paper stars that Kimberly folded
= 3 p
= 3 x 15
= 45

Answer(s): 45