Question : A man drives his car at a speed of 50 km/hr for 2 hours and then decides to slow down to 40 km/hr till the end of the journey. If his average speed for the journey was 44 km/hr, then for how much time did he drive his car at a speed of 40 km/hr?
Option 1: 2 hours
Option 2: 1 hour
Option 3: 3 hours
Option 4: 4 hours
New: SSC MTS 2024 Application Form OUT; Direct Link
Don't Miss: Month-wise Current Affairs | Upcoming Government Exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: 3 hours
Solution : Let the time of driving at 40 km/hr be $t$ hours. The total distance travelled = $( 50 \times 2 + 40 \times t)$ km The total time of travelling = $2 + t$ hours. According to the question, ⇒ $44 = \frac{{50 \times 2 + 40 \times t}}{{2 + t}}$ ⇒ $88+44t=100+40t$ ⇒ $4t=12$ $\therefore t=3$ Hence, the correct answer is 3 hours.
Application | Cutoff | Selection Process | Preparation Tips | Eligibility | Exam Pattern | Admit Card
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 car travels at the speed of 40 km/hr for the first hour and 60 km/hr for the next hour. What will be the average speed of the car?
Question : A car covers the first 140 km of a journey in 10 hours and the next 260 km in 15 hours. What is the average speed of the Car for the whole journey?
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 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