Question

How long would it take to drive 15 miles at 35 miles per hour?

Answer 1

Hint: In order to determine the time to travel 15 miles ,find the time taken to travel a unit mile and then multiply with 15.

Complete step-by-step answer:
Given in the question that the vehicle is travelling at a speed of 35 miles per hour
So to find the time taken to travel 15 miles, We’ll find how much time the vehicle take to travel a unit mile
ATQ,
$
  35\,miles\,in\,1\,Hour \\
  35\,miles\, = 1\,hour \\
  1\,mile\, = \,\dfrac{1}{{35}}hour \\
 $Using Unitary Method
Vehicle will take $\dfrac{1}{{35}}\,hour$time to travel 1 mile.
So to Travel 15 mile it will take time=
$
   = \dfrac{1}{{35}} \times 15\,hour \\
   = \dfrac{3}{7}\,hour \\
 $
Convert hour into min $1\,hour\, = \,60\,\min $
$
   = \dfrac{3}{7} \times 60\,\min \\
   = 25.714285\,\min \\
 $
Rounding off up to 2 decimal places
$ = 25.71\,\min $ approx
Therefore, the vehicle will take 25.714 mins approx. to travel 15 miles of distance.

Note: 1. A kilometer is a unit of length equivalent to \[1,000{\text{ }}meters\], or about \[0.621{\text{ }}miles\]. In the majority of the world, it is the most widely recognized unit for estimating distance between places.
2.A mile is a unit of distance equivalent to \[5,280{\text{ }}feet\] or precisely \[1.609344{\text{ }}kilometres\]. It is regularly used to quantify the distance between places in the United States and United Kingdom.
3.The answer calculated is the approximate answer.
4. While rounding off the answer error may occur, so don’t forget to cross-check your result.
5. The Standard International (SI) unit of length is the metre. 1 metre is equivalent to $0.001\,km\,,\,or\,0.0006213711922373\,miles\,.$