Calculation

[purplemathpuppy13]

sorry need help again

Brandy earns a 6% comission on all of her sales at a record store. last week,brandy earned $150 in commisions. what were brandy's total sales,in dollars, last week?

i have tried a method but it didnt work.

.06/150=x/100

then i used.............

.06/100=150/x

i need help

 

[galactus]

sorry need help again

Brandy earns a 6% comission on all of her sales at a record store. last week,brandy earned $150 in commisions. what were brandy's total sales,in dollars, last week?

i have tried a method but it didnt work.

.06/150=x/100

then i used.............

.06/\(\displaystyle \sout{100}\)=150/x
no 100, your way she is earning .06% commission
i need help

 

[tkhunny]

6% comission
earned $150 in commisions
What are total sales?

You need somewhere to START. I recommend simply naming stuff. What does it want to know? Name that first.

S = Total Sales -- That just isn't hard, but it will help much more than it may seem.

What's the commission on S?

S * 6% = S * 0.06 = $150

Solve

S = $150/0.06 = ????

 

[Denis]

...and it is ALWAYS "commission amount" / "comission rate" ;
and p% = p/100 rate (6% = .06 rate)