Question

A person wants to travel a distance of 50 km by his bicycle He travels with a speed of 12.5 km/hr After every 12.5 km he takes a rest of 20 minutes How much time will he take to complete the whole distance?

• A. 4 hours 20 min
• B. 5 hours 20 min
• C. 5 hours
• D. 6 hours

Answer 1

The correct option is C 5 hours

Time taken to travel 50 km = $\frac{50}{12.5}hrs=4hrs$
Number of stoppages = $\frac{50}{12.5}-1=3$
$\therefore$ Total duration of stoppages = (3 x 20) min = 60 min = 1 hrs
$\therefore$ Total time to complete the whole distance = 5 hrs.