Question

The average milage of a company car is required 20 gallons of oil to drive 425 miles. At this rate, approximately how many gallons of oil will be
needed for a trip of 1000 miles​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

To cover 1000 miles of distance, quantity of oil required is 47 gallons  

Step-by-step explanation:

Total distance = d = 425 miles

The quantity of oil required = 20 gallons

So, The average milage of car = $\dfrac{distance cover}{oil required}$

i.e                                               = $\dfrac{425 miles}{20 gallons}$

                                                   = 21.25  mil per gal

Again

Total distance = D = 1000 miles

The quantity of oil required = x gallons

Applying unitary method

∵   To cover 425 miles of distance, quantity of oil required = 20 gallons

So,  To cover 1 mile of distance, quantity of oil required = $\dfrac{20}{425}$ gallons

∴   To cover 1000 miles of distance, quantity of oil required = 1000 × $\dfrac{20}{425}$ gallons

i.e    x = 1000 × $\dfrac{20}{425}$ gallons

Or,   x = 1000 × 0.0470

∴      x = 47 gallons

So,  To cover 1000 miles of distance, quantity of oil required = x = 47 gallons

Hence,  To cover 1000 miles of distance, quantity of oil required is 47 gallons   Answer