This problem asks us to find the total distance a cyclist travels given their speed and the duration of their travel.
To solve this, we need the fundamental relationship between distance, speed, and time. The formula is:
Distance = Speed × Time
In mathematical notation, this is represented as:
\( d = v \times t \)
Where:
We are given the following information:
Now, we substitute these values into the formula:
\( d = 18 \text{ km/hr} \times 2.5 \text{ hours} \)
Distance = \( 18 \times 2.5 \) km
\( 18 \times 2.5 = 45 \)
You can calculate this as \( 18 \times \frac{5}{2} \), which simplifies to \( 9 \times 5 \), resulting in 45.
By applying the distance formula using the provided speed and time, the cyclist covers a distance of 45 km.
With a certain set of diameters, a tractor's front wheels make 2 revolutions (revs) for every 1 revolution of the rear wheels. The effect of changing wheel diameter(s) is shown in the following plot. 
In this context, which of the following statements is CORRECT?
A car covers 4 successive stretches of 3 km each at speed of 10 kmph, 20 kmph, 30 kmph and 60 kmph respectively. The average speed of the car for the entire journey is: