Question

The driver who came first took $16,200$ seconds to finish the race. Find the time taken by the driver in hours.$\text{(1 hr = 3600 s, 1 hr = 60 min)}$

• A. $\text{3 hr 20 min}$
• B. $\text{4 hr 20 min}$
• C. $\text{3 hr 30 min}$
• D. $\text{4 hr 30 min}$

Answer 1

The correct option is D $\text{4 hr 30 min}$

Time taken by the driver in seconds $=16,200$
Time taken by the driver in hours $=16,200÷3600$

Time taken by the driver $=4hr1800s$
$1800s$ is also half of $3600s$ which means $1800s=0.5hr$
Since, $1hr=60min$
$0.5hr=0.5\times 60min=30min$
Time taken by the driver $=4hr30min$
Option C is the correct answer.