Fill in the blanks.
The number of adults is thrice the number of children.
The number of boys is 9 times as many as the number of girls.
- Number of boys = _____ u
- Number of adults = _____ u
- Total number of people = _____ u
Adults |
Children |
3x10 |
1x10 |
|
Boys |
Girls |
|
9 |
1 |
30 u |
9 u |
1 u |
(a)
Change X times into units.
The number of boys is 9 times as many as the number of girls.
Number of girls = 1 u
Number of boys
= 9 x 1 u
= 9 u
Number of children
= 1 u + 9 u
= 10 u
(b)
The number of adults is thrice the number of children.
Number of adults
= 3 x 10 u
= 30 u
(c)
Total number of people
= 10 u + 30 u
= 40 u
Answer(s): (a) 9; (b) 30; (c) 40