The number of $2, $20 and $100 notes in a piggy bank is in the ratio of 3 : 1 : 6. The notes are worth $3756 altogether. Find the total number of $2 and $20 notes.
| |
$2 |
$20 |
$100 |
Total |
| Number |
3 u |
1 u |
6 u |
|
| Value |
$2 |
$20 |
$100 |
|
| Total value |
6 u |
20 u |
600 u |
$3756 |
Total value of $2, $20 and $100 notes
= 6 u + 20 u + 600 u
= 626 u
626 u = 3756
1 u = 3756 ÷ 626 = 6
Number of $2 and $20 notes
= 3 u + 1 u
= 4 u
= 4 x 6
= 24
Answer(s): 24
