Fill in the blanks.
There are some $2 notes and $10 notes.
The ratio of $2 notes and $10 notes is 10 : 9.
- Total number of notes = _____ u
- Difference in the number of $2 notes and $10 notes = _____ u
- Total value of notes = _____ u
- Difference in the value of $10 notes and $2 notes = _____ u
Value |
$2 |
$10 |
Number |
10 u |
9 u |
Total value |
2 x 10 u = 20 u |
10 x 9 u = 90 u |
(a)
Change ratio into units.
Number of $2 notes = 10 u
Number of $10 notes = 9 u
Total number of notes
= 10 u + 9 u
= 19 u
(b)
Difference in the number of notes
= 10 u - 9 u
= 1 u
(c)
Total value of $2 notes
= 10 u x 2
= 20 u
Total value of $10 notes
= 9 u x 10
= 90 u
Total value of notes
= 20 u + 90 u
= 110 u
(d)
Difference in the value of notes
= 90 u - 20 u
= 70 u
Answer(s): (a) 19; (b) 1; (c) 110; (d) 70