Fill in the blanks.
There are some $10 notes and $100 notes.
The ratio of $10 notes and $100 notes is 7 : 2.
- Total number of notes = _____ u
- Difference in the number of $10 notes and $100 notes = _____ u
- Total value of notes = _____ u
- Difference in the value of $100 notes and $10 notes = _____ u
Value |
$10 |
$100 |
Number |
7 u |
2 u |
Total value |
10 x 7 u = 70 u |
100 x 2 u = 200 u |
(a)
Change ratio into units.
Number of $10 notes = 7 u
Number of $100 notes = 2 u
Total number of notes
= 7 u + 2 u
= 9 u
(b)
Difference in the number of notes
= 7 u - 2 u
= 5 u
(c)
Total value of $10 notes
= 7 u x 10
= 70 u
Total value of $100 notes
= 2 u x 100
= 200 u
Total value of notes
= 70 u + 200 u
= 270 u
(d)
Difference in the value of notes
= 200 u - 70 u
= 130 u
Answer(s): (a) 9; (b) 5; (c) 270; (d) 130