PSLE
On Monday, the number of children to men to women visiting a tourist attraction was 3 : 5 : 5. On Tuesday, the number of children visiting the tourist attraction remained the same. However, the number of men increased by 40% and the number of women decreased by 40%.

1. What was the ratio of the number of children to men to women visiting the tourist attraction on Tuesday?
2. On Monday, 230 men and women visited the tourist attraction. What was the total number of visitors at the tourist attraction on Tuesday?

	Children	Men	Women
Before	3 u	5 u	5 u
Change		+ 2 u	- 2 u
After	3 u	7 u	3 u

(a)
Increase in the number of men
= 40% x 5 u
= ⁴⁰₁₀₀ x 5 u
= 2 u

Decrease in the number of women
= 40% x 5 u
= ⁴⁰₁₀₀ x 5 u
= 2 u

Number of men on Tuesday
= 5 u + 2 u
= 7 u

Number of women on Tuesday
= 5 u - 2 u
= 3 u

On Tuesday
Children : Men : Women
3 : 7 : 3

(b)
Number of men and women on Monday
= 5 u + 5 u
= 10 u

10 u = 230

1 u = 230 ÷ 10 = 23

Total number of visitors on Tuesday
= 3 u + 7 u + 3 u
= 13 u
= 13 x 23
= 299

Answer(s): (a) 3 : 7 : 3; (b) 299