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a customer is sending a shipment of 12 boxes with 35 kilos each on saturday.

i need help asap, pls anyone.
 
a customer is sending a shipment of 12 boxes with 35 kilos each on saturday. the cost is $6.50 USD per kilo and there is 5% charge for a saturday pick up. the customer has a $3 USD discount coupon. how much will the customer pay
 
 
this is my question

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Tom D. | Very patient Math Expert who likes to teachVery patient Math Expert who likes to te...
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There is a slight ambiguity whether the $3 discount is applied before or after the 5% surcharge-not that it will matter much.  We'll assume it occurs BEFORE the 5% charge.  Because of the total weight, the coupon is virtually worthless.
 
Total_wt = 12boxes(35kilo/box) = 420 Kilos
 
COST(before coupon) = (420Kilos)($6.50/Kilo)= $2730
COST(after coupon) = $2727
 
Total Cost = $2727(1.05) = $2863.35     (NOTE: 5% applied here)
 
Note: The difference between Steve S and this answer is 0.15 cents = (5% of $3)...I did say it wont matter much ;-)
 
Steve S. | Tutoring in Precalculus, Trig, and Differential CalculusTutoring in Precalculus, Trig, and Diffe...
5.0 5.0 (3 lesson ratings) (3)
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(12 boxes)*(35 kilos/box)*($6.50/kilo)*(105% for Saturday) - $3 discount = $2,863.50