Question

Together a computer, monitor, and printer cost $1,935. The monitor cost $400 less than the computer, and the printer cost $50 more than the monitor. Find the cost of the printer. ~Equation

Answer 1

x is the computer, x-400 is the monitor x-400+50 is the cost of printer

Answer 2

Need more help?

Answer 3

yes

Answer 4

ok x+x-400 + x-400+50 is the total cost of all three
so 3x-750 = 1935
3x = 2685
x = 895
now you have the cost all three
so $895 cost of computer
so printer was x-400+50
that is 895-400+50 =?

Answer 5

545

Answer 6

or 445

Answer 7

545 you were right the first time

Answer 8

ok thats the price of?

Answer 9

the printer

Answer 10

i thought it was the moniter because the printer was 895 and the monitor is 545

Answer 11

Ill type it out so it looks more reasonable for you

Answer 12

ok

Answer 13

12 mins?

Answer 14

i g2g its lie midnight

Answer 15

bye

Answer 16

post it and ill get to it in the morning

Answer 17

Ok we are given that 1935 is the cost of EVERYTHING, so
the computer + monitor + printer = $1935.
Then they tell us that the monitor costs $400 LESS THAN the computer, now heres the trick with ALL these types of questions. We dont know how much the computer costs we are just told that the monitor is 400 LESS than it, so we give the computer some letter to represent what we dont know yet, say 'x' it could be anything you like though.
So again we are told the monitor is 400 less than 'x' x being the cost of the computer, so we have

monitor = x-400 dollars

So far we still have no clue at all how much the computer is or the monitor, just that
the monitor is
x-400. Next we are told that the printer costs 50 dollars more than the monitor, ok so if the monitor is x-400 and the printer is 50 dollars MORE than the monitor that makes the printer worth

monitor+50, so we have

printer = monitor + 50 = x-400+50

ok so now we have values for the computer monitor and printer, yet we still have no idea how much they actually cost! However, they told us at the start how much it all cost, that is 1935, so we write it all down, that is
monitor + printer + computer = 1935
so getting all our totals we have now
monitor = x-400
printer = x-400+50
and the the computer was worth 'x'
so we have

x-400+x-400+50+x = 1935
now we want to simplify this a little,
we have 3 'x's
3x-400-400+50 = 1935
3x-800+50 = 1935
3x-750 = 1935
ok we add 750 to both sides
3x = 2685
now divide both sides by 3 to get x by itself
x = 2685/3
x = 895
Now we are in business, we have a value for the unknown 'x'
remember we used 'x' as our value for the computer!
Now we are in a position to calculate the price of ANY of the items.
If we go back and look at our equations we see the monitor costs 400 less than the computer, we know that the computer now costs
895
so 400 less than that will be
895 - 400 = 495
So the monitor costs 495.
Next we were told that the printer was 50 more than the monitor so we have
495+50 = 545

Answer 18

Thx