Fill in the blanks.
0.4 of the adults are equal to 0.75 of the children.
- Number of adults = _____ u
- Number of children = _____ u
- Total number of adults and children = _____ u
- Difference between the number of adults and children = _____ u
(a)
Change decimal into units.
0.4 =
410 =
25 0.75 =
75100 =
34 25 of the adults =
34 of the children
Make the numerators the same using the LCM of 2 and 3.
LCM of 2 and 3 = 6
2 x 35 x 3 of the adults =
3 x 24 x 2 of the children
615 of the adults =
68 of the children
The totals are shown in the denominators.
Number of adults = 15 u
(b)
Number of children = 8 u
(c)
Total number of adults and children
= 15 u + 8 u
= 23 u
(d)
Difference between the number of adults and children
= 15 u - 8 u
= 7 u
Answer(s): (a) 15; (b) 8; (c) 23; (d) 7