Fill in the blanks.
The number of boys is 9 more than the girls.
The number of adults is thrice the number of children.
Let the number of girls be 1 u.
- Number of boys = 1 u + _____
- Number of children = 2 u + _____
- Number of adults = _____ u + 27
- Number of people = _____ u + 36
(a)
Change X times and more than or less than into units.
The number of boys is 9 more than the girls.
Number of girls = 1 u
Number of boys = 1 u + 9
(b)
Number of children
= 1 u + 1 u + 9
= 2 u + 9
(c)
The number of adults is thrice the number of children.
Number of adults
= 3 x (2 u + 9)
= 6 u + 27
(d)
Total number of people
= (2 u + 9) + (6 u + 27)
= 2 u + 6 u + 9 + 27
= 8 u + 36
Answer(s): (a) 9; (b) 9; (c) 6; (d) 8