The number of $2, $5 and $20 notes in a piggy bank is in the ratio of 3 : 9 : 4. The notes are worth $1048 altogether. Find the total number of $2 and $5 notes.
|
$2 |
$5 |
$20 |
Total |
Number |
3 u |
9 u |
4 u |
|
Value |
$2 |
$5 |
$20 |
|
Total value |
6 u |
45 u |
80 u |
$1048 |
Total value of $2, $5 and $20 notes
= 6 u + 45 u + 80 u
= 131 u
131 u = 1048
1 u = 1048 ÷ 131 = 8
Number of $2 and $5 notes
= 3 u + 9 u
= 12 u
= 12 x 8
= 96
Answer(s): 96