Fill in the blanks.
The number of boys is 15 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 + 30
- Number of people = _____ u + 45
(a)
Change X times and more than or less than into units.
The number of boys is 15 more than the girls.
Number of girls = 1 u
Number of boys = 1 u + 15
(b)
Number of children
= 1 u + 1 u + 15
= 2 u + 15
(c)
The number of adults is twice the number of children.
Number of adults
= 2 x (2 u + 15)
= 4 u + 30
(d)
Total number of people
= (2 u + 15) + (4 u + 30)
= 2 u + 4 u + 15 + 30
= 6 u + 45
Answer(s): (a) 15; (b) 15; (c) 4; (d) 6