Answer:
The average cost of each tie is $56.350
Explanation:
We are given that a men tie buyer plans to promote a $39.99 tie. Consequently, the buyer purchases 450 ties
So, Cost of 450 ties =

An order for 100 ties that cost $20.00 each
Cost of 100 ties =

Total cost price = 17995.5+2000 = 19995.5
Let the selling price of 1 tie be x
Total ties = 450+100 = 550
So, SP of 550 ties =550x
Now we are given that markup is 55%
So, Profit % = 55%
So,

Substitute the values





Hence The average cost of each tie is $56.350