The number of $2, $10 and $100 notes in a piggy bank is in the ratio of 8 : 9 : 8. The notes are worth $9966 altogether. Find the total number of $2 and $10 notes.
|
$2 |
$10 |
$100 |
Total |
Number |
8 u |
9 u |
8 u |
|
Value |
$2 |
$10 |
$100 |
|
Total value |
16 u |
90 u |
800 u |
$9966 |
Total value of $2, $10 and $100 notes
= 16 u + 90 u + 800 u
= 906 u
906 u = 9966
1 u = 9966 ÷ 906 = 11
Number of $2 and $10 notes
= 8 u + 9 u
= 17 u
= 17 x 11
= 187
Answer(s): 187