The number of $5, $10 and $50 notes in a piggy bank is in the ratio of 1 : 9 : 6. The notes are worth $3950 altogether. Find the total number of $10 and $50 notes.
|
$5 |
$10 |
$50 |
Total |
Number |
1 u |
9 u |
6 u |
|
Value |
$5 |
$10 |
$50 |
|
Total value |
5 u |
90 u |
300 u |
$3950 |
Total value of $5, $10 and $50 notes
= 5 u + 90 u + 300 u
= 395 u
395 u = 3950
1 u = 3950 ÷ 395 = 10
Number of $10 and $50 notes
= 9 u + 6 u
= 15 u
= 15 x 10
= 150
Answer(s): 150