Question : With an average speed of 40 km/hr, a train reaches its destination in time. If it goes with an average speed of 35 km/hr, it is 15 minutes late. The total journey is:
Option 1: 30 km
Option 2: 40 km
Option 3: 70 km
Option 4: 80 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: 70 km
Solution : The average speed of a train 40 km/hr, reaches its destination in time. The new average speed is 35 km/hr. Time = 15 minutes = $\frac{15}{60} = \frac{1}{4}$ hours Let the distance travelled by the train be $d$ km. According to the question, $\frac{d}{35}-\frac{d}{40}=\frac{1}{4}$ ⇒ $\frac{8d-7d}{280}=\frac{1}{4}$ ⇒ $d=\frac{280}{4}$ $\therefore d= 70$ km Hence, the correct answer is 70 km.
Answer Key | Cutoff | Selection Process | Preparation Tips | Eligibility | Application | Exam Pattern
Question : If a train maintains an average speed of 42 km/hr, it arrives at its destination at the right time. If however, the average speed is 40 km/hr, it arrives 15 minutes late. Find the distance of the journey.
Question : A person covers the first 35 km in 60 minutes and the next 40 km in 30 minutes. What is his average speed for the whole journey?
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 : 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.
Question : A person covers the first 30 km in 60 minutes and the next 40 km in 30 minutes. What is his average speed for the whole journey?
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile