Question : A girl goes from A to B with a speed of 60 km/hr and returns from B to A with a speed of 30 km/hr. If the whole journey takes 5 hours, then what is the distance between A and B?
Option 1: 200 km
Option 2: 100 km
Option 3: 50 km
Option 4: 90 km
New: SSC MTS Tier 1 Answer key 2024 out
Don't Miss: Month-wise Current Affairs | Upcoming Government Exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 100 km
Solution : Total time taken = 5 hours Speed to go from A to B = 60 km/hr Speed to go from B to A = 30 km/hr we know that, Average speed = $\frac{\text{2 × (Speed to go to A to B) × (Speed to go to B to A)}}{\text{(Speed to go to A to B) + (Speed to go to B to A)}}$ = $\frac{2\times60\times30}{60+30}$ = $\frac{3600}{90}=40$ km/hr Average speed = 40 km/hr Now, Distance = Speed × time = 40 × 5 = 200 The total distance from A to B and B to A is 200 km. Thus, distance From A to B = $\frac{200}{2}=100$ Hence, the correct answer is 100 km.
Result | Cutoff | Selection Process | Preparation Tips | Eligibility | Application | Exam Pattern
Question : A woman drives a car. During her journey, she travels 20 minutes at a speed of 60 km/hr, another 30 minutes at a speed of 40 km/hr and 1 hour at a speed of 50 km/hr. The average speed of the car is:
Question : Sajid drove for 6 hours at a rate of 60 km/hr and for 4 hours at 50 km/hr. What was his average speed for the whole journey?
Question : A man goes from A to B at a speed of 200 km/hr and comes back to A at a speed of 300 km/hr. Find his average speed for the entire journey.
Question : A girl goes from M to N at a speed of 25 km/hr and returns to M at a speed of 37.5 km/hr, via the same route. What is the girl's average speed (in km/hr)?
Question : A train moves at a speed of 35 km/hr for the first 2 hours and at a speed of 50 km/hr for the next 4 hours. Find the average speed of the train during the entire journey.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile