Fill in the blanks.
There are some $10 notes and $50 notes.
The ratio of $10 notes and $50 notes is 12 : 7.
- Total number of notes = _____ u
- Difference in the number of $10 notes and $50 notes = _____ u
- Total value of notes = _____ u
- Difference in the value of $50 notes and $10 notes = _____ u
Value |
$10 |
$50 |
Number |
12 u |
7 u |
Total value |
10 x 12 u = 120 u |
50 x 7 u = 350 u |
(a)
Change ratio into units.
Number of $10 notes = 12 u
Number of $50 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 $10 notes
= 12 u x 10
= 120 u
Total value of $50 notes
= 7 u x 50
= 350 u
Total value of notes
= 120 u + 350 u
= 470 u
(d)
Difference in the value of notes
= 350 u - 120 u
= 230 u
Answer(s): (a) 19; (b) 5; (c) 470; (d) 230