Answer and Explanation:
The computation is shown below:
a. The amount that should be paid is
= $4,500 - $1,200 - ($4,500 - $1,200) × 2%) + $140
= $4,500 - $1,200 - $66 + $140
= $3,374
And,
b. The amount that should be paid is
= $7,650 - $450 - ($7,650 - $450) × 1%
= $7,650 - $450 - $72
= $7,128
In this way the amount to be paid in full could be determined