SOLUTION: If you have changed the tires on your car, the original diameter is 24.5 inches. to a new diameter of 26 inches, how fast are you actually going if your speedometer is reading 53 m

Algebra ->  Sequences-and-series -> SOLUTION: If you have changed the tires on your car, the original diameter is 24.5 inches. to a new diameter of 26 inches, how fast are you actually going if your speedometer is reading 53 m      Log On


   



Question 1144844: If you have changed the tires on your car, the original diameter is 24.5 inches. to a new diameter of 26 inches, how fast are you actually going if your speedometer is reading 53 mph?
A. 50.5 mph
B. 53 mph
C. 56.2 mph
D. 62.8 mph

Is C correct?
The question and the answer choices in the link here: https://prnt.sc/p40r49

Found 2 solutions by josmiceli, Alan3354:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
A bigger diameter gives the tire a bigger circumference,
which means the car gets where its going quicker.
Let +s+ = speed on speedometer
This is a direct relation, so I can say:
+26%2F24.5+=+s+%2F+53+
+26%2A53+=+24.5s+
+24.5s+=+1378+
+s+=+56.24+
I get C. for correct answer

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming the original tires made the speedometer accurate.
No reason to assume that.