The number of $5, $10 and $100 notes in a piggy bank is in the ratio of 3 : 4 : 8. The notes are worth $7695 altogether. Find the total number of $5 and $10 notes.
|
$5 |
$10 |
$100 |
Total |
Number |
3 u |
4 u |
8 u |
|
Value |
$5 |
$10 |
$100 |
|
Total value |
15 u |
40 u |
800 u |
$7695 |
Total value of $5, $10 and $100 notes
= 15 u + 40 u + 800 u
= 855 u
855 u = 7695
1 u = 7695 ÷ 855 = 9
Number of $5 and $10 notes
= 3 u + 4 u
= 7 u
= 7 x 9
= 63
Answer(s): 63