There were some adults and children at a gathering.
411 of the people were adults.
23 of the children were boys and the rest were girls. There were 14 girls.
- How many children were there?
- How many more children than adults were at the gathering?
Adults |
Children |
Total |
4x3 |
7x3 |
11x3 |
|
Boys |
Girls |
|
|
2x7 |
1x7 |
|
12 u |
14 u |
7 u |
33 u |
(a)
The number of children is the combined repeated identity.
Number of girls = 7 u
7 u = 14
1 u = 14 ÷ 7 = 2
Number of children
= 21 u
= 21 x 2
= 42
(b)
Number of more children than adults
= 21 u - 12 u
= 9 u
= 9 x 2
= 18
Answer(s): (a) 42; (b) 18