Fill in the blanks.
There are some $2 notes and $10 notes.
The ratio of $2 notes and $10 notes is 9 : 7.
- 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 |
9 u |
7 u |
Total value |
2 x 9 u = 18 u |
10 x 7 u = 70 u |
(a)
Change ratio into units.
Number of $2 notes = 9 u
Number of $10 notes = 7 u
Total number of notes
= 9 u + 7 u
= 16 u
(b)
Difference in the number of notes
= 9 u - 7 u
= 2 u
(c)
Total value of $2 notes
= 9 u x 2
= 18 u
Total value of $10 notes
= 7 u x 10
= 70 u
Total value of notes
= 18 u + 70 u
= 88 u
(d)
Difference in the value of notes
= 70 u - 18 u
= 52 u
Answer(s): (a) 16; (b) 2; (c) 88; (d) 52