SOLUTION: Roberto built a model racecar that is 3 inches long and has a scale of 0.5inches = 2 feet. he determined that the real car must be 3•2 or 6 feet long. is this correct? explain
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Question 373449: Roberto built a model racecar that is 3 inches long and has a scale of 0.5inches = 2 feet. he determined that the real car must be 3•2 or 6 feet long. is this correct? explain
Found 2 solutions by fractalier, rfer:
Answer by fractalier(6550) (Show Source): You can put this solution on YOUR website!
No, he is not correct. Set up a proportion,
.5 inches is to 2 feet as 3 inches is to x feet...we can write this as
Now cross multiply and solve
.5x = 6
x = 12 feet
Answer by rfer(16322) (Show Source): You can put this solution on YOUR website!
3/.5=6
6*2=12 ft
6 half inch pieces in 3 inches
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