Fill in the blanks.
There are some $2 notes and $10 notes.
The ratio of $2 notes and $10 notes is 5 : 2.
- 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 |
5 u |
2 u |
Total value |
2 x 5 u = 10 u |
10 x 2 u = 20 u |
(a)
Change ratio into units.
Number of $2 notes = 5 u
Number of $10 notes = 2 u
Total number of notes
= 5 u + 2 u
= 7 u
(b)
Difference in the number of notes
= 5 u - 2 u
= 3 u
(c)
Total value of $2 notes
= 5 u x 2
= 10 u
Total value of $10 notes
= 2 u x 10
= 20 u
Total value of notes
= 10 u + 20 u
= 30 u
(d)
Difference in the value of notes
= 20 u - 10 u
= 10 u
Answer(s): (a) 7; (b) 3; (c) 30; (d) 10