There were some adults and children at a party.
37 of the people were adults.
38 of the children were girls and the rest were boys. There were 20 boys.
- How many children were there?
- How many more children than adults were at the party?
Adults |
Children |
Total |
3x2 |
4x2 |
7x2 |
|
Girls |
Boys |
|
|
3x1 |
5x1 |
|
6 u |
3 u |
5 u |
14 u |
(a)
The number of children is the combined repeated identity.
Number of boys = 5 u
5 u = 20
1 u = 20 ÷ 5 = 4
Number of children
= 8 u
= 8 x 4
= 32
(b)
Number of more children than adults
= 8 u - 6 u
= 2 u
= 2 x 4
= 8
Answer(s): (a) 32; (b) 8