There were some adults and children at a function.
37 of the people were adults.
38 of the children were boys and the rest were girls. There were 25 girls.
- How many children were there?
- How many more children than adults were at the function?
Adults |
Children |
Total |
3x2 |
4x2 |
7x2 |
|
Boys |
Girls |
|
|
3x1 |
5x1 |
|
6 u |
3 u |
5 u |
14 u |
(a)
The number of children is the combined repeated identity.
Number of girls = 5 u
5 u = 25
1 u = 25 ÷ 5 = 5
Number of children
= 8 u
= 8 x 5
= 40
(b)
Number of more children than adults
= 8 u - 6 u
= 2 u
= 2 x 5
= 10
Answer(s): (a) 40; (b) 10