Fill in the blanks.
There are some $5 notes and $10 notes.
The ratio of $5 notes and $10 notes is 12 : 7.
- Total number of notes = _____ u
- Difference in the number of $5 notes and $10 notes = _____ u
- Total value of notes = _____ u
- Difference in the value of $10 notes and $5 notes = _____ u
Value |
$5 |
$10 |
Number |
12 u |
7 u |
Total value |
5 x 12 u = 60 u |
10 x 7 u = 70 u |
(a)
Change ratio into units.
Number of $5 notes = 12 u
Number of $10 notes = 7 u
Total number of notes
= 12 u + 7 u
= 19 u
(b)
Difference in the number of notes
= 12 u - 7 u
= 5 u
(c)
Total value of $5 notes
= 12 u x 5
= 60 u
Total value of $10 notes
= 7 u x 10
= 70 u
Total value of notes
= 60 u + 70 u
= 130 u
(d)
Difference in the value of notes
= 70 u - 60 u
= 10 u
Answer(s): (a) 19; (b) 5; (c) 130; (d) 10