To calculate the selling price per phone, we first find 25% of the cost price, which is R24,000. This comes out to be R6,000. Then, we add this amount to the cost price:
Selling price per phone = Cost price per phone + 25% of cost price
= R24,000 + R6,000
= R30,000
Next, to determine the profit made per phone, we subtract the cost price from the selling price:
Profit per phone = Selling price per phone - Cost price per phone
= R30,000 - R24,000
= R6,000
Therefore, the selling price per phone is R30,000 and the profit made per phone is R6,000.