PSLE A caterer prepares fish fingers for some people attending the wedding party. The ratio of the number of children to the number of adults attending is 3 : 7. Among the adults, the ratio of the number of men to the women is 4 : 3. A total of 216 fish fingers are prepared so that each child gets 5 fish fingers and each adult gets 3.
- What fraction of the people attending the party are women?
- How many adults are attending the party?
|
Children |
Adults |
Total |
Comparison between the number of children and adults |
3
|
7
|
10
|
|
|
Men |
Women |
|
Comparison between the number of children and adults |
|
4
|
3
|
|
Number |
3 u |
4 u |
3 u |
10 u |
Value |
5 |
3 |
3 |
|
Total value |
15 u |
12 u |
9 u |
36 u |
(a)
Fraction of the people that are adults =
710 Fraction of the adults that are women =
37 Fraction of the people that are women
=
710 x
37 =
310 (b)
Total number of fish fingers
= (3 u x 5) + (7 u x 3)
= 15 u + 21 u
= 36 u
36 u = 216
1 u = 216 ÷ 36 = 6
Number of adults
= 4 u + 3 u
= 7 u
= 7 x 6
= 42
Answer(s): (a)
310; (b) 42