Question : A gives B a head-start of 10 seconds in a 1500 m race and both finish the race at the same time. What is the time A takes (in minutes) to finish the race if the speed of B is 6 m/s?
Option 1: 3
Option 2: 4
Option 3: 8
Option 4: 5
Correct Answer: 4
Solution : Time taken by B to finish the race = $\frac{1500}{6}$ = 250 seconds Given A gives a head start of 10 seconds to B. $\therefore$ Time taken by A to finish the race = 250 – 10 = 240 seconds Now, 240 seconds = $\frac{240}{60}$ = 4 minutes Hence, the correct answer is 4.
Result | Eligibility | Application | Selection Process | Cutoff | Admit Card | Preparation Tips
Question : Five bells ring together at the intervals of 3, 5, 8, 9, and 10 seconds. All the bells ring simultaneously at the same time. They will again ring simultaneously after:
Question : A vehicle is going at one-fourth of its usual speed and it takes an extra 45 minutes to reach its destination. It's usual time to cover the same distance is:
Question : A and B run a 12 km race on a circular track of length 1200 m. They complete one round in 300 seconds and 400 seconds, respectively. After how much time from the start will the faster person meet the slower person for the last time?
Question : A car travels 20% slower than a train. Both start from point A at the same time and reach point B 240 km away at the same time. On the way, the train takes 48 minutes for stopping at the stations. What is the speed (in km/hr) of the car?
Question : If 4 men or 6 boys can finish a piece of work in 20 days, then in how many days can 6 men and 11 boys finish the same work?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile