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bogdanovich [222]
3 years ago
11

To buy both the green and the blue bikes would cost $1500. To buy the green and red bikes would cost $750. To buy all three bike

s would cost $2000. how much does each bike cost?
Mathematics
2 answers:
Cerrena [4.2K]3 years ago
5 0
I would go with what she answered bescause I checked over it and it is all correct! :) I know that I didn't do much but sometimes its just nice to get a second opinion! :) 
Aleksandr-060686 [28]3 years ago
4 0
Green = g
Blue = b
Red = r

g+b = 1500
g+r = 750
g+b+r = 2000

in the 1st equation solve for b

g+b =1500
b = 1500-g

2nd equation solve for r

g+ r = 750
r = 750-g

now substitute the answers fro. b and r into the final equation.

g+b+r = 2000
g + 1500-g + 750-g = 2000
-g + 2250 = 2000
-g = -250
g = 250

So we k own the green bike is $250.

Blue = 1500- g
blue = 1500-250= $1250

red = 750-g
red = 750-250 = $500
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