Answer :
The actual amount that should be credited is $757.58.
Solution:
Given that,
2% Discount if paid in 10 days.
1% Discount if paid in 15 days, (but greater that 10 days)
Net due in 60 days.
That is,
[tex]\bold{1400\times0.98 = 1372}[/tex] will close the acount on days 1-10
[tex]\bold{1400\times0.99 = 1386}[/tex] will close the acount on days 11-15
And August 8 is Day 15 and falls under the 1% discount rule.
Therefore, we have to divide the partial payment by the complement of the discount rate.
[tex]\bold{\Rightarrow\frac{750}{0.99} = 757.58}[/tex] from the balance, and [tex]\bold{1400.00 - 757.58 = 642.42}[/tex] is due by day 60.