Answer:
The cost of 8 tires at $110 each is
= $8 * $110
= $880
The cost of 12 tires at $160 each is
$12 * $160
= $1,920
The cost of 15 tires at $180 each is
= $15 * $180
= $2,700
Therefore, the total cost is
= $880 + $1,920 + $2,700
= $5,500
So list price is $5,500
Trade discount is 10/5
First we find the complement of trade discount and convert each percent to decimal
So it becomes:
100% - 10% = 90%
= 90/100
= 0.90
and again
100% - 5% = 95%
= 95 / 100
= 0.95
B company paid within the discount period, so 2% discount possible
First of all, it is necessary to obtain complement of discount and convert each percent to decimal
So it becomes
100% - 2% = 98%
= 98/100
= 0.98
The net price equivalent rate is obtained by multiplying the complement of discounts.
Net price equivalent rate is
= 0.90 * 0.95 * 0.98
= 0.8379
Net price = List price * Net price equivalent rate
So, Net price = $5,500 * 0.8379
= $4,608.45
Freight is $400
So Company B pay is
= $4,608.45 + $400
= $5,008.45