HELP WITH MATH QUESTION I DO NOT UNDERSTAND.?

Question

I need help with this.

Renata is a sales rep. for a printer co. She sells two models of printers- Model P and Model Q.

• Last month she sold a total of 120 printers.

• The ratio of Model P printers sold to Model Q printers sold was 3:5.

If Renata is paid $25 commission for every Model P printers sold and a $20 commission for every Model Q printer sold, what was her total commission last month?

please help !

Answer 1

so 3 in every 8 computers is a model p

     5 in every 8 computers is a model q

you can set this up like a proportion 3 is to 8 like x is to 120

3/8=x/120

cross multiply

8x=3(120)

8x=360

divide both sides by 8

x=45 model p times $25=$1125

120 total- 45 model p= 75 model q

75 model q times $20= $1500

total commission= 1125 + 1500

$2625 for the last month

Answer 2

a+b=120             cosider model P=a; model Q=b

a/b=3/5  so, a=3b/5

3b/5+b= 120 and solve it u get

8b/5=120 and b=600/8

b=75, so number of model Q sold(b)= 75

and model P sold= 45

now, commision for P model: 25x45=$ 1125

commision for Q: 20x75= $1500

total commision: 1500+1125=2625

this is the method and i guess the answer is right, But in advance....sorry if i am wrong okey!

Answer 3

there were 45 of Model P and 75 Model Q.

so....

$25 x 45 + $20 x 75 = $1125 + 1500 = $2625 commission.

Answer 4

$2625.00

Answer 5

ratio of 3:5 means you should divide 120 by 8 to get 15.

Then multiple 3x15 and 5x15 to get

45 P and 75 Q models

45 x $25 = 1125

75 x 20 = 1500

1125 + 1500 = 2625