The number of $2, $10 and $50 notes in a piggy bank is in the ratio of 8 : 2 : 5. The notes are worth $2288 altogether. Find the total number of $2 and $10 notes.
|
$2 |
$10 |
$50 |
Total |
Number |
8 u |
2 u |
5 u |
|
Value |
$2 |
$10 |
$50 |
|
Total value |
16 u |
20 u |
250 u |
$2288 |
Total value of $2, $10 and $50 notes
= 16 u + 20 u + 250 u
= 286 u
286 u = 2288
1 u = 2288 ÷ 286 = 8
Number of $2 and $10 notes
= 8 u + 2 u
= 10 u
= 10 x 8
= 80
Answer(s): 80