PSLE
Emily and Jane folded paper stars over two days. On Thursday, Emily folded 53 paper stars more than Jane. On Friday, Emily folded another 26 paper stars and Jane folded another 9. At the end of the two days, Emily made ⁷₉ of the total number of stars. What was the number of paper stars that Jane folded?

	Emily	Jane	Difference
Before	1 u + 53	1 u	53
Change	+ 26	+ 9
After	1 u + 79	1 u + 9	70
Comparing between Emily and Jane in the end	7 p	2 p	5 p

Difference between the number of paper stars that Emily and Jane folded in the end is repeated.

Difference between the number of paper stars that Emily and Jane folded in the end
= 7 p - 2 p
= 5 p

Difference between the number of paper stars that Emily and Jane folded in the end
= (1 u + 79) - (1 u + 9)
= 1 u + 79 - 1 u - 9
= 79 - 9
= 70

5 p = 70

1 p = 70 ÷ 5 = 14

Number of paper stars that Jane folded
= 2 p
= 2 x 14
= 28

Answer(s): 28