The number of $2, $5 and $100 notes in a piggy bank is in the ratio of 8 : 3 : 4. The notes are worth $2155 altogether. Find the total number of $5 and $100 notes.
|
$2 |
$5 |
$100 |
Total |
Number |
8 u |
3 u |
4 u |
|
Value |
$2 |
$5 |
$100 |
|
Total value |
16 u |
15 u |
400 u |
$2155 |
Total value of $2, $5 and $100 notes
= 16 u + 15 u + 400 u
= 431 u
431 u = 2155
1 u = 2155 ÷ 431 = 5
Number of $5 and $100 notes
= 3 u + 4 u
= 7 u
= 7 x 5
= 35
Answer(s): 35