PSLE
Lynn and Jaslyn folded paper balls over two days. On Friday, Lynn folded 29 paper balls more than Jaslyn. On Saturday, Lynn folded another 37 paper balls and Jaslyn folded another 6. At the end of the two days, Lynn made ⁷₉ of the total number of balls. What was the number of paper balls that Lynn folded?

	Lynn	Jaslyn	Difference
Before	1 u + 29	1 u	29
Change	+ 37	+ 6
After	1 u + 66	1 u + 6	60
Comparing between Lynn and Jaslyn in the end	7 p	2 p	5 p

Difference between the number of paper balls that Lynn and Jaslyn folded in the end is repeated.

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

Difference between the number of paper balls that Lynn and Jaslyn folded in the end
= (1 u + 66) - (1 u + 6)
= 1 u + 66 - 1 u - 6
= 66 - 6
= 60

5 p = 60

1 p = 60 ÷ 5 = 12

Number of paper balls that Lynn folded
= 7 p
= 7 x 12
= 84

Answer(s): 84