Fill in the blanks.
0.7 of the children are equal to 0.75 of the adults.
- Number of children = _____ u
- Number of adults = _____ u
- Total number of children and adults = _____ u
- Difference between the number of children and adults = _____ u
(a)
Change decimal into units.
0.7 =
710 =
710 0.75 =
75100 =
34 710 of the children =
34 of the adults
Make the numerators the same using the LCM of 7 and 3.
LCM of 7 and 3 = 21
7 x 310 x 3 of the children =
3 x 74 x 7 of the adults
2130 of the children =
2128 of the adults
The totals are shown in the denominators.
Number of children = 30 u
(b)
Number of adults = 28 u
(c)
Total number of children and adults
= 30 u + 28 u
= 58 u
(d)
Difference between the number of children and adults
= 30 u - 28 u
= 2 u
Answer(s): (a) 30; (b) 28; (c) 58; (d) 2