Fill in the blanks.
The number of girls is 10 more than the boys.
The number of adults is thrice 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 + 30
- Number of people = _____ u + 40
(a)
Change X times and more than or less than into units.
The number of girls is 10 more than the boys.
Number of boys = 1 u
Number of girls = 1 u + 10
(b)
Number of children
= 1 u + 1 u + 10
= 2 u + 10
(c)
The number of adults is thrice the number of children.
Number of adults
= 3 x (2 u + 10)
= 6 u + 30
(d)
Total number of people
= (2 u + 10) + (6 u + 30)
= 2 u + 6 u + 10 + 30
= 8 u + 40
Answer(s): (a) 10; (b) 10; (c) 6; (d) 8