Answer:
The target cost is

Explanation:
From the question we are told that
The distributors profit margin is 30%
The retailers price of the phone is $150
The retailers profit margin is 20%
The profit to be made by manufacture is 10%
Generally profit margin is mathematically represented as

Here NI is Net income
NS is Net sales
Generally the profit of the retailer from the price of the phone is

=>
Generally the cost price for the retailer which is also the selling price of the distributor is

=>

=>

Generally the profit for the distributor is


Generally the cost price for the distributor which is also the selling price the manufacturer is

=>

=>

Generally the profit for the manufacturer is

=>

=>

Generally the target cost is mathematically represented as

=>

=>
