PSLE On Friday, the number of children to men to women visiting a tourist attraction was 5 : 4 : 10. On Saturday, the number of children visiting the tourist attraction remained the same. However, the number of men decreased by 50% and the number of women increased by 50%.
- What was the ratio of the number of adults to children visiting the tourist attraction on Saturday?
- On Friday, 308 men and women visited the tourist attraction. What was the total number of adult visitors at the tourist attraction on Saturday?
|
Children |
Men |
Women |
Before |
5 u |
4 u |
10 u |
Change |
|
- 2 u |
+ 5 u |
After |
5 u |
2 u |
15 u |
(a)
Increase in the number of men
= 50% x 4 u
=
50100 x 4 u
= 2 u
Decrease in the number of women
= 50% x 10 u
=
50100 x 10 u
= 5 u
Number of men on Saturday
= 4 u - 2 u
= 2 u
Number of women on Saturday
= 10 u + 5 u
= 15 u
Number of adults on Saturday
= 2 u + 15 u
= 17 u
On Saturday
Adults : Children
17 : 5
(b)
Number of men and women on Friday
= 4 u + 10 u
= 14 u
14 u = 308
1 u = 308 ÷ 14 = 22
Total number of adult visitors on Saturday
= 17 u
= 17 x 22
= 374
Answer(s): (a) 17 : 5; (b) 374