Fill in the blanks.
The number of girls is 18 more than the boys.
The number of adults is twice the number of children.
Let the number of boys be 1 u.
- Number of girls = 1 u + _____
- Number of children = 2 u + _____
- Number of adults = _____ u + 36
- Number of people = _____ u + 54
(a)
Change X times and more than or less than into units.
The number of girls is 18 more than the boys.
Number of boys = 1 u
Number of girls = 1 u + 18
(b)
Number of children
= 1 u + 1 u + 18
= 2 u + 18
(c)
The number of adults is twice the number of children.
Number of adults
= 2 x (2 u + 18)
= 4 u + 36
(d)
Total number of people
= (2 u + 18) + (4 u + 36)
= 2 u + 4 u + 18 + 36
= 6 u + 54
Answer(s): (a) 18; (b) 18; (c) 4; (d) 6