The number of $5, $50 and $100 notes in a piggy bank is in the ratio of 5 : 1 : 8. The notes are worth $9625 altogether. Find the total number of $50 and $100 notes.
| |
$5 |
$50 |
$100 |
Total |
| Number |
5 u |
1 u |
8 u |
|
| Value |
$5 |
$50 |
$100 |
|
| Total value |
25 u |
50 u |
800 u |
$9625 |
Total value of $5, $50 and $100 notes
= 25 u + 50 u + 800 u
= 875 u
875 u = 9625
1 u = 9625 ÷ 875 = 11
Number of $50 and $100 notes
= 1 u + 8 u
= 9 u
= 9 x 11
= 99
Answer(s): 99
