PSLE
On Monday, the number of children to women to men visiting a fun fair was 1 : 10 : 10. On Tuesday, the number of children visiting the fun fair remained the same. However, the number of women decreased by 40% and the number of men increased by 30%.

1. What was the ratio of the number of adults to children visiting the fun fair on Tuesday?
2. On Monday, 800 women and men visited the fun fair. What was the total number of adult visitors at the fun fair on Tuesday?

	Children	Women	Men
Before	1 u	10 u	10 u
Change		- 4 u	+ 3 u
After	1 u	6 u	13 u

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

Decrease in the number of men
= 30% x 10 u
= ³⁰₁₀₀ x 10 u
= 3 u

Number of women on Tuesday
= 10 u - 4 u
= 6 u

Number of men on Tuesday
= 10 u + 3 u
= 13 u

Number of adults on Tuesday
= 6 u + 13 u
= 19 u

On Tuesday
Adults : Children
19 : 1

(b)
Number of women and men on Monday
= 10 u + 10 u
= 20 u

20 u = 800

1 u = 800 ÷ 20 = 40

Total number of adult visitors on Tuesday
= 19 u
= 19 x 40
= 760

Answer(s): (a) 19 : 1; (b) 760