The number of $5, $10 and $50 notes in a piggy bank is in the ratio of 9 : 6 : 1. The notes are worth $1085 altogether. Find the total number of $10 and $50 notes.
|
$5 |
$10 |
$50 |
Total |
Number |
9 u |
6 u |
1 u |
|
Value |
$5 |
$10 |
$50 |
|
Total value |
45 u |
60 u |
50 u |
$1085 |
Total value of $5, $10 and $50 notes
= 45 u + 60 u + 50 u
= 155 u
155 u = 1085
1 u = 1085 ÷ 155 = 7
Number of $10 and $50 notes
= 6 u + 1 u
= 7 u
= 7 x 7
= 49
Answer(s): 49