The number of $2, $10 and $100 notes in a piggy bank is in the ratio of 2 : 8 : 3. The notes are worth $3456 altogether. Find the total number of $10 and $100 notes.
|
$2 |
$10 |
$100 |
Total |
Number |
2 u |
8 u |
3 u |
|
Value |
$2 |
$10 |
$100 |
|
Total value |
4 u |
80 u |
300 u |
$3456 |
Total value of $2, $10 and $100 notes
= 4 u + 80 u + 300 u
= 384 u
384 u = 3456
1 u = 3456 ÷ 384 = 9
Number of $10 and $100 notes
= 8 u + 3 u
= 11 u
= 11 x 9
= 99
Answer(s): 99