Fill in the blanks.
The number of boys is 5 more than the girls.
The number of adults is twice 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 + 10
- Number of people = _____ u + 15
(a)
Change X times and more than or less than into units.
The number of boys is 5 more than the girls.
Number of girls = 1 u
Number of boys = 1 u + 5
(b)
Number of children
= 1 u + 1 u + 5
= 2 u + 5
(c)
The number of adults is twice the number of children.
Number of adults
= 2 x (2 u + 5)
= 4 u + 10
(d)
Total number of people
= (2 u + 5) + (4 u + 10)
= 2 u + 4 u + 5 + 10
= 6 u + 15
Answer(s): (a) 5; (b) 5; (c) 4; (d) 6