The number of $5, $50 and $100 notes in a piggy bank is in the ratio of 2 : 9 : 6. The notes are worth $6360 altogether. Find the total number of $50 and $100 notes.
| |
$5 |
$50 |
$100 |
Total |
| Number |
2 u |
9 u |
6 u |
|
| Value |
$5 |
$50 |
$100 |
|
| Total value |
10 u |
450 u |
600 u |
$6360 |
Total value of $5, $50 and $100 notes
= 10 u + 450 u + 600 u
= 1060 u
1060 u = 6360
1 u = 6360 ÷ 1060 = 6
Number of $50 and $100 notes
= 9 u + 6 u
= 15 u
= 15 x 6
= 90
Answer(s): 90
