There were some adults and children at a function.
38 of the people were adults.
23 of the children were boys and the rest were girls. There were 35 girls.
- How many children were there?
- How many more children than adults were at the function?
Adults |
Children |
Total |
3x3 |
5x3 |
8x3 |
|
Boys |
Girls |
|
|
2x5 |
1x5 |
|
9 u |
10 u |
5 u |
24 u |
(a)
The number of children is the combined repeated identity.
Number of girls = 5 u
5 u = 35
1 u = 35 ÷ 5 = 7
Number of children
= 15 u
= 15 x 7
= 105
(b)
Number of more children than adults
= 15 u - 9 u
= 6 u
= 6 x 7
= 42
Answer(s): (a) 105; (b) 42