The number of $5, $10 and $50 notes in a piggy bank is in the ratio of 2 : 3 : 5. The notes are worth $2030 altogether. Find the total number of $5 and $10 notes.
| |
$5 |
$10 |
$50 |
Total |
| Number |
2 u |
3 u |
5 u |
|
| Value |
$5 |
$10 |
$50 |
|
| Total value |
10 u |
30 u |
250 u |
$2030 |
Total value of $5, $10 and $50 notes
= 10 u + 30 u + 250 u
= 290 u
290 u = 2030
1 u = 2030 ÷ 290 = 7
Number of $5 and $10 notes
= 2 u + 3 u
= 5 u
= 5 x 7
= 35
Answer(s): 35
