At a party,
25 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 3 chocolates and each boy is given 6 chocolates. Each accompanying adult receives 7 chocolates. Given that only 372 chocolates are given away to boys and adults, how many less girls are there than boys?
Girls |
Boys |
Adults |
3x5 |
2x5 |
2x3 |
3x3 |
|
6 u |
9 u |
10 u |
The number of children is repeated. Make the number of children the same. LCM of 3 and 5 is 15.
|
Girls |
Boys |
Adults |
Number |
6 u |
9 u |
10 u |
Value |
3 |
6 |
7 |
Total value |
18 u |
54 u |
70 u |
Number of chocolates given away to boys and adults
= 54 u + 70 u
= 124 u
1 u = 372 ÷ 124 = 3
Number of less girls than boys
= 9 u - 6 u
= 3 u
= 3 x 3
= 9
Answer(s): 9