PSLE
Vanessa and Fiona folded paper balls over two days. On Friday, Vanessa folded 25 paper balls more than Fiona. On Saturday, Vanessa folded another 26 paper balls and Fiona folded another 6. At the end of the two days, Vanessa made ⁷₉ of the total number of balls. What was the number of paper balls that Vanessa folded?

	Vanessa	Fiona	Difference
Before	1 u + 25	1 u	25
Change	+ 26	+ 6
After	1 u + 51	1 u + 6	45
Comparing between Vanessa and Fiona in the end	7 p	2 p	5 p

Difference between the number of paper balls that Vanessa and Fiona folded in the end is repeated.

Difference between the number of paper balls that Vanessa and Fiona folded in the end
= 7 p - 2 p
= 5 p

Difference between the number of paper balls that Vanessa and Fiona folded in the end
= (1 u + 51) - (1 u + 6)
= 1 u + 51 - 1 u - 6
= 51 - 6
= 45

5 p = 45

1 p = 45 ÷ 5 = 9

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

Answer(s): 63