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Lelechka [254]
3 years ago
14

Ruth filled her car with 21.2 gallons at the start of her trip. Upon arrival she recorded her odometer mileage of 43796 miles, b

ut she realized she had forgotten to get her beginning mileage. Knowing that her car get an average of 21 mpg, what is the best estimate of her beginning mileage?
Mathematics
2 answers:
klemol [59]3 years ago
8 0
Multiply 21•21.2 and then 437956-445 and you get 43,351
dem82 [27]3 years ago
7 0

43,135 miles

Step-by-step explanation:

Given data

Average speed: 21 miles per gallon

Fuel: 21.2 gallons

The distance (d) traveled with this amount of fuel is:

21.2 gal × 21 mi/gal = 4,452  mi

The distance traveled is equal to the difference between the final reading of the odometer and the initial one.

d = final reading - initial reading

initial reading = final reading - d = 43,795 mi - 6.6 × 10² mi = 43,135 miles

We can estimate that the initial reading of the odometer was around 43,135 miles

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If the triangles are similar, then the corresponding ratio of their sides have equal ratios. Through ratio and proportion, we would determine the answer.

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Read 2 more answers
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