Question

there are only 7 days left until the launch of our new product and we only have 668.00 left in our promotion budget .we need to spend 85.00 on the last day .can you please calculate how many dollars a day we can spend on the remaining days?

Answer 1

In total, you have $668.00.
To reserve enough for the last day, you need to subtract the last day's budget:
$668.00-85.00=583.00$
This means that, for the remaining 6 days in the week, you have $583.00. 
Assuming an equal amount is being spent each day, you can calculate the daily budget by dividing the remaining total by the number of days left. 
$\frac{583}{6} =97.16$
To avoid going over budget, you can spend $97.16 per day for the other six days.

Hope this helps!

Answer 2

668-85=583
583/6=97.1666
He can spend 97.16 on the remaining days.