Question

If a car travels at an average speed of 70 Kilometers per hour for 4 hours, how many kilometers does it travel?
A) $200Km$
B) $280Km$
C) $240Km$
D) $180Km$

Answer 1

Hint: In this question speed and time are given and we need to find distance. To find distance we can use the formula.
$Dis\tan ce = Speed \times Time$

Complete step-by-step answer:
(Step 1) Collect the information given in question which is Speed =70Km/ hr, Time = 4 hr.
(Step 2) Now out of the three formulas given in the hint section, we will be going to select equation (1) as the equation needed to solve this question.
$ \Rightarrow Dis\tan ce = Speed \times Time$ `
(Steps 3) Now simply just substitute the values in the above formula as mentioned in step 2. After the substitution we get,
$
   \Rightarrow Dis\tan ce = 70(Km/hr) \times 4(hr) \\
   \Rightarrow Dis\tan ce = 70 \times 4 = 280Km \\
 $
Final answer: The car travels a distance in kilometers is equal to $280Km$ and on closely looking at the given options we will easily say that option B is the correct answer to the given question.

Car travels a distance of 280km.

Note: This is a very simple and common type of question. Here in this question, we will not know about one thing but the other (remaining) parameters will be known. It is simply a formula based question which will employ a 3 way used formula as given by equations (1), (2), (3). These equations could be used interchangeably and very frequently.