PSLE
Nicole and Jane folded paper stars over two days. On Thursday, Nicole folded 20 paper stars more than Jane. On Friday, Nicole folded another 23 paper stars and Jane folded another 10. At the end of the two days, Nicole made ⁵₇ of the total number of stars. What was the number of paper stars that Nicole folded?

	Nicole	Jane	Difference
Before	1 u + 20	1 u	20
Change	+ 23	+ 10
After	1 u + 43	1 u + 10	33
Comparing between Nicole and Jane in the end	5 p	2 p	3 p

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

Difference between the number of paper stars that Nicole and Jane folded in the end
= 5 p - 2 p
= 3 p

Difference between the number of paper stars that Nicole and Jane folded in the end
= (1 u + 43) - (1 u + 10)
= 1 u + 43 - 1 u - 10
= 43 - 10
= 33

3 p = 33

1 p = 33 ÷ 3 = 11

Number of paper stars that Nicole folded
= 5 p
= 5 x 11
= 55

Answer(s): 55