At a school carnival, each girl received 4 packets of chocolate bars and each boy received 5 packets of chocolate bars. Each accompanying adult received 6 packets of chocolate bars.
37 of the people at the school carnival were adults. The ratio of the number of girls to the number of boys at the carnival was 2 : 7. Given that only 1002 packets of chocolate bars were given away, how many people were there at the carnival?
Girls |
Boys |
Adults |
4x9 = 36 u |
3x9 = 27 u |
2x4 = 8 u |
7x4 = 28 u |
27 u |
|
Girls |
Boys |
Adults |
Number |
8 u |
28 u |
27 u |
Value |
4 |
5 |
6 |
Total Value |
32 u |
140 u |
162 u |
Fraction of the people who were children
= 1 -
37=
47 The number of children is the combined repeated identity. Make the number of children the same. LCM of 9 and 4 is 36.
Number of packets of chocolate bars given away
= 8 u x 4 + 28 u x 5 + 27 u x 6
= 32 u + 140 u + 162 u
= 334 u
334 u = 1002
1 u = 1002 ÷ 334 = 3
Number of people at the carnival
= 36 u + 27 u
= 63 u
= 63 x 3
= 189
Answer(s): 189