At a party,
13 of the people are adults. The remaining group of people is divided into girls and boys in the ratio of 2 : 3. Each girl is given 2 keychains and each boy is given 3 keychains. Each accompanying adult receives 6 keychains. Given that only 96 keychains are given away to boys and adults, how many less girls are there than boys?
Girls |
Boys |
Adults |
2x5 |
1x5 |
2x2 |
3x2 |
|
4 u |
6 u |
5 u |
The number of children is repeated. Make the number of children the same. LCM of 2 and 5 is 10.
|
Girls |
Boys |
Adults |
Number |
4 u |
6 u |
5 u |
Value |
2 |
3 |
6 |
Total value |
8 u |
18 u |
30 u |
Number of keychains given away to boys and adults
= 18 u + 30 u
= 48 u
1 u = 96 ÷ 48 = 2
Number of less girls than boys
= 6 u - 4 u
= 2 u
= 2 x 2
= 4
Answer(s): 4