There were some adults and children at a celebration.
49 of the people were adults.
34 of the children were boys and the rest were girls. There were 15 girls.
- How many children were there?
- How many more children than adults were at the celebration?
Adults |
Children |
Total |
4x4 |
5x4 |
9x4 |
|
Boys |
Girls |
|
|
3x5 |
1x5 |
|
16 u |
15 u |
5 u |
36 u |
(a)
The number of children is the combined repeated identity.
Number of girls = 5 u
5 u = 15
1 u = 15 ÷ 5 = 3
Number of children
= 20 u
= 20 x 3
= 60
(b)
Number of more children than adults
= 20 u - 16 u
= 4 u
= 4 x 3
= 12
Answer(s): (a) 60; (b) 12