PSLE
On Friday, the number of children to women to men visiting a tourist attraction was 7 : 10 : 5. On Saturday, the number of children visiting the tourist attraction remained the same. However, the number of women increased by 40% and the number of men decreased by 20%.

1. What was the ratio of the number of children to women to men visiting the tourist attraction on Saturday?
2. On Friday, 465 women and men visited the tourist attraction. What was the total number of visitors at the tourist attraction on Saturday?

	Children	Women	Men
Before	7 u	10 u	5 u
Change		+ 4 u	- 1 u
After	7 u	14 u	4 u

(a)
Increase in the number of women
= 40% x 10 u
= ⁴⁰₁₀₀ x 10 u
= 4 u

Decrease in the number of men
= 20% x 5 u
= ²⁰₁₀₀ x 5 u
= 1 u

Number of women on Saturday
= 10 u + 4 u
= 14 u

Number of men on Saturday
= 5 u - 1 u
= 4 u

On Saturday
Children : Women : Men
7 : 14 : 4

(b)
Number of women and men on Friday
= 10 u + 5 u
= 15 u

15 u = 465

1 u = 465 ÷ 15 = 31

Total number of visitors on Saturday
= 7 u + 14 u + 4 u
= 25 u
= 25 x 31
= 775

Answer(s): (a) 7 : 14 : 4; (b) 775