Cody delivered 130 mirrors to Oscar. Oscar would have to pay Cody $20 for every mirror safely delivered. Cody would have to pay Oscar $36 for every damaged mirror. If Oscar paid a total of $1032, how many mirrors were damaged?
Number of
mirrors
safely delivered |
Payment for
the mirrors
safely delivered |
Number of
damaged
mirrors |
Penalty for
damaged
mirrors |
Total amount
received
|
| 130 |
130 x 20 =
$2600 |
0 |
0 |
2600 - 0 =
$2600 |
| 129 |
129 x 20 =
$2580 |
1 |
1 x 36 =
$36 |
2580 - 36 =
$2544 |
102
|
102 x 20 =
$2040 |
28 |
28 x 36 =
$1008 |
2040 - 1008 =
$1032 |
Total amount paid to Cody if all the mirrors were safely delivered
= 130 x 20
= $2600
Big difference between the the total amounts paid to Cody
= 2600 - 1032
= $1568
Small difference between the amount for one mirror safely delivered and one damaged mirror
= 36 + 20
= $56
Number of damaged mirrors
= 1568 ÷ 56
= 28
Answer(s): 28
