ow much dpes one grapefruit cost?
2007-04-26 12:36:18 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
6x = 12 y
12x + 24y = $12.00
use substitution or elimination to solve
2007-04-26 12:39:20 · answer #1 · answered by csucdartgirl 7 · 0⤊ 0⤋
6g/12o=12g/24o
12g+24o=$12
6g+12o=$6
If 12 oranges=$6(1/2)
then 6 grapefruit=$6(1/2)
6 grapefruit =$3
1 grapefruit= .50
2007-04-26 12:47:45 · answer #2 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
Since grapefruit are twice as expensive as oranges (6G=12O or 12G=24O), and the answer is only about grapefruit, substitute:
12G + 24O = $12, so 12G+12G=$12, then 24G=$12
Divide to get 1G=$0.5 or 50 cents
Hope this helps!
2007-04-26 12:54:27 · answer #3 · answered by Doodle 1 · 0⤊ 0⤋
50 cents per grapefruit..because 12 divided by 4 is 3..then divide 3 by 6 and you get 0.5
2007-04-26 12:39:52 · answer #4 · answered by animalluv123 1 · 0⤊ 0⤋
o = oranges
g = grapefruit
6g = 12o
12g + 24o = 12
g = 12o /6
g = 2o
12(2o) + 24o = 12
24 o + 24o = 12
48 o = 12
oranges = 12/48
oranges = $0,25
g = 2 oranges
g = 2(0.25)
g = $ .50
><>
2007-04-26 12:56:53 · answer #5 · answered by aeiou 7 · 1⤊ 0⤋
50 cents and the oranges cost 25 cents each
2007-04-26 13:36:11 · answer #6 · answered by bt 1 · 0⤊ 0⤋
50 cent
2007-04-26 12:39:46 · answer #7 · answered by Yancy 3 · 0⤊ 0⤋