The number of $2, $5 and $100 notes in a piggy bank is in the ratio of 6 : 9 : 8. The notes are worth $4285 altogether. Find the total number of $5 and $100 notes.
| |
$2 |
$5 |
$100 |
Total |
| Number |
6 u |
9 u |
8 u |
|
| Value |
$2 |
$5 |
$100 |
|
| Total value |
12 u |
45 u |
800 u |
$4285 |
Total value of $2, $5 and $100 notes
= 12 u + 45 u + 800 u
= 857 u
857 u = 4285
1 u = 4285 ÷ 857 = 5
Number of $5 and $100 notes
= 9 u + 8 u
= 17 u
= 17 x 5
= 85
Answer(s): 85
