Answer: yes
Step-by-step explanation:
B should equal zero. I believe...
You need to find out how much it costs to wash one car, so:
3×=13.50
Divide both sides by 3.
x=4.5 per car.
Now multiply 4.5 by 25 which should give you $112.50
Answer:
Distance = 500 miles
Step-by-step explanation:
<u>Step 1: Write the data of speed, distance and time for aeroplane and automobile.</u>
<em>Automobile:</em>
Speed = r
Time = 10 hours (3 am till 1 pm)
Distance = SxT
Distance = r x 10 = 10r
<em>Aeroplane:</em>
Speed = 200 + r (200 mph more than automobile)
Time = 2 hours ( 11 am till 1 pm)
Distance = SxT
Distance = 2x(200+r) = 400+2r
<u>Step 2: Equate both distances to find the value of r</u>
Distance of automobile = Distance of aeroplane
10r = 400 + 2r
8r = 400
r = 50
<u>Step 3: Find the distance using any one equation</u>
Distance of automobile = 10r
r = 50
Distance = 10 x 50 = 500 miles
Therefore, the plane travels 500 miles.
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