Question

while driving a car at speed of 50 km per hour its cover the distance from home to his office in one hour 30 minutes one day he was 15 minutes late from his home in order to reach the office at time what should be the speed of the car​

Answer 1

Answer:

60 km/h

Step-by-step explanation:

To solve this question, we must know the basic formulas of time, distance and speed:

$distance = speed * time$

$speed = \frac{distance}{time}$

$time = \frac{distance}{speed}$

Now, let's apply these formulas to answer the question:

1st, we must find the distance from his home to office...

$distance = speed * time$

              = $50 * 1.5$              [I have converted 1 and a half hours to decimals]

              = 75 km

Now that we know the distance, let's start solving the question:

- Point to remember: He was 15 min late from home.

Time remaining to travel from home to office = 90 - 15

                                                                           = 75 minutes

Distance = 75 km

Now, applying the speed formula...

$speed = \frac{distance}{time}$

          = $\frac{75}{1.25}$                        [I have converted 1 hours 15 minutes to decimals]

          = 60

Therefore, the speed required would be 60 km/h.

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Hope it helps ☺