There were some adults and children at a parade.
49 of the people were adults.
34 of the children were girls and the rest were boys. There were 30 boys.
- How many children were there?
- How many more children than adults were at the parade?
Adults |
Children |
Total |
4x4 |
5x4 |
9x4 |
|
Girls |
Boys |
|
|
3x5 |
1x5 |
|
16 u |
15 u |
5 u |
36 u |
(a)
The number of children is the combined repeated identity.
Number of boys = 5 u
5 u = 30
1 u = 30 ÷ 5 = 6
Number of children
= 20 u
= 20 x 6
= 120
(b)
Number of more children than adults
= 20 u - 16 u
= 4 u
= 4 x 6
= 24
Answer(s): (a) 120; (b) 24