The number of $5, $50 and $100 notes in a piggy bank is in the ratio of 4 : 8 : 7. The notes are worth $8960 altogether. Find the total number of $5 and $50 notes.
| |
$5 |
$50 |
$100 |
Total |
| Number |
4 u |
8 u |
7 u |
|
| Value |
$5 |
$50 |
$100 |
|
| Total value |
20 u |
400 u |
700 u |
$8960 |
Total value of $5, $50 and $100 notes
= 20 u + 400 u + 700 u
= 1120 u
1120 u = 8960
1 u = 8960 ÷ 1120 = 8
Number of $5 and $50 notes
= 4 u + 8 u
= 12 u
= 12 x 8
= 96
Answer(s): 96
