PSLE On Monday, the number of children to men to women visiting a tourist attraction was 1 : 12 : 10. On Tuesday, the number of children visiting the tourist attraction remained the same. However, the number of men increased by 25% and the number of women decreased by 20%.
- What was the ratio of the number of children to men to women visiting the tourist attraction on Tuesday?
- On Monday, 726 men and women visited the tourist attraction. What was the total number of visitors at the tourist attraction on Tuesday?
|
Children |
Men |
Women |
Before |
1 u |
12 u |
10 u |
Change |
|
+ 3 u |
- 2 u |
After |
1 u |
15 u |
8 u |
(a)
Increase in the number of men
= 25% x 12 u
=
25100 x 12 u
= 3 u
Decrease in the number of women
= 20% x 10 u
=
20100 x 10 u
= 2 u
Number of men on Tuesday
= 12 u + 3 u
= 15 u
Number of women on Tuesday
= 10 u - 2 u
= 8 u
On Tuesday
Children : Men : Women
1 : 15 : 8
(b)
Number of men and women on Monday
= 12 u + 10 u
= 22 u
22 u = 726
1 u = 726 ÷ 22 = 33
Total number of visitors on Tuesday
= 1 u + 15 u + 8 u
= 24 u
= 24 x 33
= 792
Answer(s): (a) 1 : 15 : 8; (b) 792