Fill in the blanks.
The number of girls is 7 more than the boys.
The number of adults is five times 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 + 35
- Number of people = _____ u + 42
(a)
Change X times and more than or less than into units.
The number of girls is 7 more than the boys.
Number of boys = 1 u
Number of girls = 1 u + 7
(b)
Number of children
= 1 u + 1 u + 7
= 2 u + 7
(c)
The number of adults is five times the number of children.
Number of adults
= 5 x (2 u + 7)
= 10 u + 35
(d)
Total number of people
= (2 u + 7) + (10 u + 35)
= 2 u + 10 u + 7 + 35
= 12 u + 42
Answer(s): (a) 7; (b) 7; (c) 10; (d) 12