Question : Anil completed a certain journey by car. If he covered 35% of the distance at 70 km/h, 40% of the distance at 80 km/h and the remaining distance at 50 km/h, his average speed (in km/h) for the entire journey is:
Option 1: $66 \frac{1}{6} $km/h
Option 2: $66 \frac{2}{3} $km/h
Option 3: $66 \frac{1}{3} $km/h
Option 4: $66 \frac{4}{3} $km/h
New: SSC CHSL tier 1 answer key 2024 out | SSC CHSL 2024 Notification PDF
Recommended: How to crack SSC CHSL | SSC CHSL exam guide
Don't Miss: Month-wise Current Affairs | Upcoming government exams
New: Unlock 10% OFF on PTE Academic. Use Code: 'C360SPL10'
Correct Answer: $66 \frac{2}{3} $km/h
Solution : Let the total distance covered be 100 km. Distance covered in the first case = 35% of 100 = 35 km Speed in the first case = 70 km/h Time taken in the first case = $\frac{1}{2}$ hr Distance covered in the second case = 40% of 100 = 40 km Speed in the second case = 80 km/h Time taken in the second case = $\frac{1}{2}$ hr Distance covered in the third case = 100 – 35 – 40 = 25 km Speed in the third case = 50 km/h Time taken in the third case = $\frac{1}{2}$ hr Average speed = $\frac{\text{Total distance}}{\text{Total time}}$ = $\frac{100}{\frac{1}{2}+\frac{1}{2}+\frac{1}{2}}$ = $\frac{100}{\frac{3}{2}}$ = $\frac{200}{3}$ = $66 \frac{2}{3} $km/h Hence, the correct answer is $66 \frac{2}{3} $km/h.
Candidates can download this e-book to give a boost to thier preparation.
Result | Eligibility | Application | Admit Card | Answer Key | Preparation Tips | Cutoff
Question : Mohan completed a certain journey by car. If he covered 30% of the distance at 90 km/hr, 45% of the distance at 135 km/hr, and the remaining distance at 75 km/hr. His average speed (in km/hr) for the entire journey is:
Question : Sriya with her family travelled from Bolpur to Suri by car at a speed of 40 km/h and returned to Bolpur at a speed of 50 km/h. The average speed for the whole journey is:
Question : One-third part of a certain journey is covered at the speed of 10 km/hr, one-fourth part at the speed of 15 km/hr, and the rest part at the speed of 20 km/hr. What will be the average speed (in km/hr) for the whole journey?
Question : A car covers the first 210 km at a speed of 70 km/h, it covers the next 170 km at a speed of 85 km/h. What is its average speed?
Question : A train is moving at a speed of 80 km/h and covers a certain distance in 4.5 hours. The speed of the train to cover the same distance in 4 hours should be:
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile