Subject: General Aptitude · Chapter: Time and Distance · Exam: · Marks: · Difficulty:
A car is driven at the speed of 100 km/hr and stops for 10 minutes at the end of every 150 km. To cover a distance of 1000 km, it will take
(a)9 hours
(b)10 hours
(c)11 hours
(d)12 hours
Answer
Answer (as printed): C
Explanation
Time taken to cover 150 km = (1 hr 30 min + 10 min) $$=1 \mathrm{hr} 40 \mathrm{min}=1 \frac{2}{3} \mathrm{hr}=\frac{5}{3} \mathrm{hr} .$$ Time taken to cover $(150 \times 6)$ i.e., 900 km $$=\left(\frac{5}{3} \times 6\right) \text { hrs. }=10 \text { hrs. }$$ Remaining 100 km is covered in 1 hour. Total time taken $=(10+1) \mathrm{hrs}=11 \mathrm{hrs}$.