At a party,
13 of the people are adults. The remaining group of people is divided into girls and boys in the ratio of 3 : 7. Each girl is given 2 chocolates and each boy is given 5 chocolates. Each accompanying adult receives 8 chocolates. Given that only 375 chocolates are given away to boys and adults, how many less girls are there than boys?
Girls |
Boys |
Adults |
2x5 |
1x5 |
3x1 |
7x1 |
|
3 u |
7 u |
5 u |
The number of children is repeated. Make the number of children the same. LCM of 2 and 10 is 10.
|
Girls |
Boys |
Adults |
Number |
3 u |
7 u |
5 u |
Value |
2 |
5 |
8 |
Total value |
6 u |
35 u |
40 u |
Number of chocolates given away to boys and adults
= 35 u + 40 u
= 75 u
1 u = 375 ÷ 75 = 5
Number of less girls than boys
= 7 u - 3 u
= 4 u
= 4 x 5
= 20
Answer(s): 20