The number of $2, $10 and $100 notes in a piggy bank is in the ratio of 1 : 7 : 1. The notes are worth $1892 altogether. Find the total number of $10 and $100 notes.
|
$2 |
$10 |
$100 |
Total |
Number |
1 u |
7 u |
1 u |
|
Value |
$2 |
$10 |
$100 |
|
Total value |
2 u |
70 u |
100 u |
$1892 |
Total value of $2, $10 and $100 notes
= 2 u + 70 u + 100 u
= 172 u
172 u = 1892
1 u = 1892 ÷ 172 = 11
Number of $10 and $100 notes
= 7 u + 1 u
= 8 u
= 8 x 11
= 88
Answer(s): 88