The number of $2, $5 and $100 notes in a piggy bank is in the ratio of 5 : 8 : 5. The notes are worth $4950 altogether. Find the total number of $2 and $5 notes.
| |
$2 |
$5 |
$100 |
Total |
| Number |
5 u |
8 u |
5 u |
|
| Value |
$2 |
$5 |
$100 |
|
| Total value |
10 u |
40 u |
500 u |
$4950 |
Total value of $2, $5 and $100 notes
= 10 u + 40 u + 500 u
= 550 u
550 u = 4950
1 u = 4950 ÷ 550 = 9
Number of $2 and $5 notes
= 5 u + 8 u
= 13 u
= 13 x 9
= 117
Answer(s): 117
