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olga55 [171]
2 years ago
6

If a car travels 792 feet in 12 seconds what is the speed of the car in miles per hour?

Mathematics
2 answers:
UkoKoshka [18]2 years ago
6 0

Answer:

Step-by-step explanation:

1 mile contains 5280 feet

x mile contains 792 feet             Cross Multiply

5280 x = 792                               Divide by 5280

x = 792 / 5280

x = 0.15 miles

1 hour = 3600 seconds

Distance travelled in 12 sec = 0.15 miles

                                 3600 sec = x                       Cross Multiply

12x = 3600  * 0.15                                                  Combine

12x =  540                                                               Divide both sides by 12

12x/12 = 540/12

x = 45 miles / hour

JulsSmile [24]2 years ago
3 0

Answer:

As per given Information

  • Car travels 792 feet in 12 second .

we have to find the speed of car in miles per hour .

First we change the unit

1miles = 5280 feet

Therefore, 792 feet = 792/5280 miles

= 0.15 miles

1 hour = 60×60 second

1 hour = 3600 second

Therefore , 12 second = 12/3600 hour

= 1/300 hour

Now finding the speed of car in

\bf \: Speed   =  \frac{Distance}{Time}

Putting the value we obtain

\sf \dashrightarrow \: Speed \:  =  \frac{0.15}{ \frac{1}{300} }  \\  \\ \sf \dashrightarrow \: Speed \:  =  \frac{0.15 \times 300}{1}  \\  \\ \sf \dashrightarrow \: Speed \:  =  \frac{45}{1}  \\  \\ \sf \dashrightarrow \: Speed \:  =  \cancel \frac{45}{1}  \\  \\ \sf \dashrightarrow \: Speed \:  = 45 \: miles \: per \: hour

  • <u>Therefore</u><u>,</u><u> </u><u>the </u><u>speed </u><u>of </u><u>car </u><u>is </u><u>4</u><u>5</u><u> </u><u>m</u><u>i</u><u>l</u><u>e</u><u>s</u><u> </u><u>per </u><u>hour </u><u>.</u>
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