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Jodi went 54 miles on 3.5 gallons of gas, and she wants to know how far she can go on 9 gallons of gas. Which proportion would be useful to solve the problem?
A)
9
3
=
54
x
B)
9
54
=
x
3
C)
54
3.5
=
x
9
D)
54
9
=
3.5
x

Respuesta :

54 (miles) / 3.5 (gallons) = x (miles) / 9 (gallons)

54/3.5 = x/9
80% of ____games is 32 games
sol'n:   0.80x = 32
                  x = 32/0.80
                  x = 40
Ans. 80% of 40 games is 32 games

75% of ____ peaches is 15 peaches
sol'n:    0.75x = 15
                   x = 15/0.75
                   x = 20
Ans:  75% of 20 peaches is 15 peaches

2 doctors is ____ % of 25 doctors
sol'n:   2 = 25x
           x = 2/25
           x = 0.08
Ans.:  2 doctors is 8 percent of 25 doctors

_____% of 200 miles is 150 miles
sol'n:    200x = 150
                  x = 150/200
                  x =0.75
Ans:     75% of 200 miles is 150 miles

60 minutes is 20% of ____ minutes
sol'n:     60 = 0.20x
              60/0.20 = x
               x = 300
Ans.: 60 minutes is 20% of 300 minutes

360 kilometers is 24% of ____ kilometers
sol'n:   360 = 0.24x
            360/0.24 = x
                x = 1500
Ans:   360 kilometers is 24% of 1500 kilometers

9 stores is 3% of ____ stores
sol'n:    9 = 0.03x
             9/0.03 = x
                x = 300
Ans.: 9 stores is 3% of 300 stores
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