The number of $5, $10 and $50 notes in a piggy bank is in the ratio of 3 : 8 : 5. The notes are worth $2760 altogether. Find the total number of $5 and $10 notes.
|
$5 |
$10 |
$50 |
Total |
Number |
3 u |
8 u |
5 u |
|
Value |
$5 |
$10 |
$50 |
|
Total value |
15 u |
80 u |
250 u |
$2760 |
Total value of $5, $10 and $50 notes
= 15 u + 80 u + 250 u
= 345 u
345 u = 2760
1 u = 2760 ÷ 345 = 8
Number of $5 and $10 notes
= 3 u + 8 u
= 11 u
= 11 x 8
= 88
Answer(s): 88