The number of $2, $5 and $20 notes in a piggy bank is in the ratio of 6 : 2 : 3. The notes are worth $902 altogether. Find the total number of $5 and $20 notes.
|
$2 |
$5 |
$20 |
Total |
Number |
6 u |
2 u |
3 u |
|
Value |
$2 |
$5 |
$20 |
|
Total value |
12 u |
10 u |
60 u |
$902 |
Total value of $2, $5 and $20 notes
= 12 u + 10 u + 60 u
= 82 u
82 u = 902
1 u = 902 ÷ 82 = 11
Number of $5 and $20 notes
= 2 u + 3 u
= 5 u
= 5 x 11
= 55
Answer(s): 55