There were some adults and children at a celebration.
37 of the people were adults.
37 of the children were girls and the rest were boys. There were 32 boys.
- How many children were there?
- How many more children than adults were at the celebration?
Adults |
Children |
Total |
3x7 |
4x7 |
7x7 |
|
Girls |
Boys |
|
|
3x4 |
4x4 |
|
21 u |
12 u |
16 u |
49 u |
(a)
The number of children is the combined repeated identity.
Number of boys = 16 u
16 u = 32
1 u = 32 ÷ 16 = 2
Number of children
= 28 u
= 28 x 2
= 56
(b)
Number of more children than adults
= 28 u - 21 u
= 7 u
= 7 x 2
= 14
Answer(s): (a) 56; (b) 14