Question

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

Answer 1

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

Answer 2

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

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

• Therefore, the speed of car is 45 miles per hour .