Final answer:
Sam needs to make Nu. 150000 in total sales to achieve his target of Nu. 12000, taking into account his Nu. 6000 monthly salary and 4% commission rate.
Step-by-step explanation:
To calculate the total sales Sam should make to achieve his target of Nu. 12000, we first need to consider his monthly salary and the commission rate. Sam earns a fixed salary of Nu. 6000 and a commission of 4% on his total sales.
Let's denote the total sales that Sam needs to make as 'x'. Since Sam wants to earn a total of Nu. 12000, we have the following equation:
Nu. 6000 + 0.04x = Nu. 12000
Now, we'll solve for 'x' to find the total sales:
0.04x = Nu. 12000 - Nu. 6000
0.04x = Nu. 6000
x = Nu. 6000 / 0.04
x = Nu. 150000
Therefore, Sam must make Nu. 150000 in total sales to achieve his target of Nu. 12000.