Percents

• Apr 13th 2009, 01:16 PM
mustangman
Percents
Hi

Can someone please help me with this homework problem, and can u tell me step by step on how to figure it out please.
Here it is:
Sandra earns a salary of $350 per week plus an additional 5% commission on her sales. If her total earnings last week were$500, how much were her sales?

Thanks,
• Apr 13th 2009, 01:38 PM
icemanfan
Quote:

Originally Posted by mustangman
Hi

Can someone please help me with this homework problem, and can u tell me step by step on how to figure it out please.
Here it is:
Sandra earns a salary of $350 per week plus an additional 5% commission on her sales. If her total earnings last week were$500, how much were her sales?

Thanks,

Sandra's total earnings were $500, of which$350 was salaried, so she earned $150 in commissions (500-350). Since she receives 5% commission, that means$150 is 5% of her sales. 100% of her sales would be 20 times that, which is $3000. • Apr 13th 2009, 01:40 PM e^(i*pi) Quote: Originally Posted by mustangman Hi Can someone please help me with this homework problem, and can u tell me step by step on how to figure it out please. Here it is: Sandra earns a salary of$350 per week plus an additional 5% commission on her sales. If her total earnings last week were $500, how much were her sales? Thanks, Say that she made sales with a value of n Then we can get an equation: total = base + commission total = 500, base = 350, so commission is 150 From this we can say 150 = 0.05n and multiply by 20 to solve for n • Apr 13th 2009, 01:52 PM mustangman Thanks, but i don't understand how to solve ones that have a varable. If i did ur problem right I got the answer$150.

Is there a way u can explain it better 4 me. Thanks
• Apr 13th 2009, 01:54 PM
mustangman
Can u explain this better please.
• Apr 13th 2009, 01:57 PM
Reckoner
Quote:

Originally Posted by mustangman
Thanks, but i don't understand how to solve ones that have a varable.
If i did ur problem right I got the answer $150. How? The total sales is$\displaystyle n,$not$\displaystyle 0.05n.$You need to solve for$\displaystyle n$in the equation. Do you know how to solve simple algebraic equations? The equation$\displaystyle 150=0.05n$can be written as$\displaystyle 150=\frac{5n}{100}\displaystyle \Rightarrow150=\frac n{20}.\$

Now, do as e^(i*pi) said and multiply both sides by 20.