The number of $5, $50 and $100 notes in a piggy bank is in the ratio of 2 : 6 : 1. The notes are worth $2050 altogether. Find the total number of $5 and $50 notes.
| |
$5 |
$50 |
$100 |
Total |
| Number |
2 u |
6 u |
1 u |
|
| Value |
$5 |
$50 |
$100 |
|
| Total value |
10 u |
300 u |
100 u |
$2050 |
Total value of $5, $50 and $100 notes
= 10 u + 300 u + 100 u
= 410 u
410 u = 2050
1 u = 2050 ÷ 410 = 5
Number of $5 and $50 notes
= 2 u + 6 u
= 8 u
= 8 x 5
= 40
Answer(s): 40
