Question

A cyclist covers a distance of 750 m in 2 min 30 sec. What is the speed in km/hr of the cyclist?

• A. 20
• B. 18
• C. 36
• D. 9

Answer 1

The Correct Option is B

Finding Speed in km/hr 

Given Data:

• Distance covered = 750 meters
• Time taken = 2 minutes 30 seconds = 2.5 minutes

Step 1: Convert Distance to Kilometers

\[ 750 \text{ meters} = \frac{750}{1000} \text{ km} = 0.75 \text{ km} \]

Step 2: Convert Time to Hours

\[ 150 \text{ seconds} = \frac{150}{3600} \text{ hours} = \frac{5}{120} = \frac{1}{24} \text{ hours} \]

Step 3: Compute Speed

\[ \text{Speed} = \frac{\text{Distance}}{\text{Time}} = \frac{0.75}{\frac{1}{24}} \]

Multiplying:

\[ 0.75 \times 24 = 18 \text{ km/hr} \]

Final Answer:

The correct answer is (B) 18 km/hr.