PSLE
On Wednesday, the number of children to men to women visiting a fun fair was 5 : 6 : 8. On Thursday, the number of children visiting the fun fair remained the same. However, the number of men increased by 50% and the number of women decreased by 25%.

1. What was the ratio of the number of children to men to women visiting the fun fair on Thursday?
2. On Wednesday, 434 men and women visited the fun fair. What was the total number of visitors at the fun fair on Thursday?

	Children	Men	Women
Before	5 u	6 u	8 u
Change		+ 3 u	- 2 u
After	5 u	9 u	6 u

(a)
Increase in the number of men
= 50% x 6 u
= ⁵⁰₁₀₀ x 6 u
= 3 u

Decrease in the number of women
= 25% x 8 u
= ²⁵₁₀₀ x 8 u
= 2 u

Number of men on Thursday
= 6 u + 3 u
= 9 u

Number of women on Thursday
= 8 u - 2 u
= 6 u

On Thursday
Children : Men : Women
5 : 9 : 6

(b)
Number of men and women on Wednesday
= 6 u + 8 u
= 14 u

14 u = 434

1 u = 434 ÷ 14 = 31

Total number of visitors on Thursday
= 5 u + 9 u + 6 u
= 20 u
= 20 x 31
= 620

Answer(s): (a) 5 : 9 : 6; (b) 620