PSLE On Monday, the number of children to women to men visiting a safari park was 3 : 4 : 10. On Tuesday, the number of children visiting the safari park remained the same. However, the number of women increased by 50% and the number of men decreased by 20%.
- What was the ratio of the number of children to women to men visiting the safari park on Tuesday?
- On Monday, 462 women and men visited the safari park. What was the total number of visitors at the safari park on Tuesday?
|
Children |
Women |
Men |
Before |
3 u |
4 u |
10 u |
Change |
|
+ 2 u |
- 2 u |
After |
3 u |
6 u |
8 u |
(a)
Increase in the number of women
= 50% x 4 u
=
50100 x 4 u
= 2 u
Decrease in the number of men
= 20% x 10 u
=
20100 x 10 u
= 2 u
Number of women on Tuesday
= 4 u + 2 u
= 6 u
Number of men on Tuesday
= 10 u - 2 u
= 8 u
On Tuesday
Children : Women : Men
3 : 6 : 8
(b)
Number of women and men on Monday
= 4 u + 10 u
= 14 u
14 u = 462
1 u = 462 ÷ 14 = 33
Total number of visitors on Tuesday
= 3 u + 6 u + 8 u
= 17 u
= 17 x 33
= 561
Answer(s): (a) 3 : 6 : 8; (b) 561