The number of $2, $5 and $10 notes in a piggy bank is in the ratio of 6 : 6 : 5. The notes are worth $552 altogether. Find the total number of $2 and $5 notes.
|
$2 |
$5 |
$10 |
Total |
Number |
6 u |
6 u |
5 u |
|
Value |
$2 |
$5 |
$10 |
|
Total value |
12 u |
30 u |
50 u |
$552 |
Total value of $2, $5 and $10 notes
= 12 u + 30 u + 50 u
= 92 u
92 u = 552
1 u = 552 ÷ 92 = 6
Number of $2 and $5 notes
= 6 u + 6 u
= 12 u
= 12 x 6
= 72
Answer(s): 72