The number of $2, $10 and $50 notes in a piggy bank is in the ratio of 8 : 1 : 9. The notes are worth $2856 altogether. Find the total number of $10 and $50 notes.
| |
$2 |
$10 |
$50 |
Total |
| Number |
8 u |
1 u |
9 u |
|
| Value |
$2 |
$10 |
$50 |
|
| Total value |
16 u |
10 u |
450 u |
$2856 |
Total value of $2, $10 and $50 notes
= 16 u + 10 u + 450 u
= 476 u
476 u = 2856
1 u = 2856 ÷ 476 = 6
Number of $10 and $50 notes
= 1 u + 9 u
= 10 u
= 10 x 6
= 60
Answer(s): 60
