The number of $2, $10 and $100 notes in a piggy bank is in the ratio of 9 : 7 : 1. The notes are worth $2256 altogether. Find the total number of $10 and $100 notes.
|
$2 |
$10 |
$100 |
Total |
Number |
9 u |
7 u |
1 u |
|
Value |
$2 |
$10 |
$100 |
|
Total value |
18 u |
70 u |
100 u |
$2256 |
Total value of $2, $10 and $100 notes
= 18 u + 70 u + 100 u
= 188 u
188 u = 2256
1 u = 2256 ÷ 188 = 12
Number of $10 and $100 notes
= 7 u + 1 u
= 8 u
= 8 x 12
= 96
Answer(s): 96