Question

The train covers 20 km in 15 minutes. How much distance will the car cover in 15 minutes if the speed of car is 60% of the speed of the train?

• A. 3hrs 45min
• B. 4hrs45min
• C. 5hrs45min
• D. 2hrs45min

Answer 1

The correct option is A

3hrs 45min

Given that speed of car = 60% of speed of train
Now, we know that the speed is directly proportional to the distance since the time taken remains constant.
Let x be the distance covered by car.

The distance travelled and the amount of petrol consumed are directly proportional

$\frac{A}{B}$= Constant

$\frac{A_1}{B_1}$ = $\frac{A_2}{B_2}$

Now, we can say,

$\frac{Speedofcar}{Speedoftrain}$ = $\frac{Distancecoveredbycar}{Distancecoveredbytrain}$

$\frac{60}{100}$ = $\frac{x}{20}$

$\Rightarrow$ x = 12 km